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There is no Defined Vocabulary List for A-Level Latin. OCR publishes one for AS Level (H043) and expects A-Level candidates to treat it as the floor of their vocabulary rather than its ceiling, extending it by wide reading. That single decision changes how the whole qualification must be prepared: nobody can hand you a finite list to learn, so vocabulary has to be built the way a reader builds it - from texts, in families, with the derivational machinery of the language doing most of the work. These notes set out what that means in practice. First, what the specification actually requires and how to run a vocabulary notebook that repays the time. Second, word-building: the prefixes and suffixes that turn a hundred simple verbs into a thousand compounds, and the sound changes they cause. Third, semantic range - the fact that a Latin word covers a territory rather than translating to a single English word, and that translating it well means choosing inside that territory. Fourth, a drill on principal parts, because the perfect stem is a vocabulary problem as much as a morphological one. And finally the examinable skill this all serves: meeting a word you have never seen, in an unseen passage, with no dictionary, and producing a translation you can defend.
5 sections~43 min reading time3 competenciesLevel Standard 3 · Advanced 2
basic level
AS Level Latin (H043) has a Defined Vocabulary List, and everything in the AS papers is written within it or glossed. An AS candidate's task is therefore finite: learn the list, and learn it in both directions, so that a form on the page produces a meaning and an English meaning produces a Latin form. Word-building matters even at this level, because the list contains simple verbs whose compounds appear freely.
higher level
The A-Level removes the list. Vocabulary is expected to grow by reading, which means the A-Level candidate must be able to deduce as well as recall, must know the derivational system well enough to unpack an unfamiliar compound on sight, and must be alert to the wider semantic range that real authors exploit - the metaphorical use of a military term, the technical use of an everyday one, the moral colour a word carries for a Roman reader that its English equivalent does not carry for us.
Reading depth: In depth
Text size: Standard
Constructed illustrative sentence (not a quotation): lēgātī, quī ab hostibus missī erant, cōnsulem ōrāvērunt ut obsidibus acceptīs bellum fīnīret. Write the notebook entry you would make for lēgātus, obses, ōrō and fīniō.
Full form: lēgātus, lēgātī, m. Sense here: 'envoys', men sent to negotiate - the word is a perfect passive participle of lēgō, lēgāre (to send as a deputy) used as a noun, which is why it means 'one who has been sent'. Other common sense: a legate, that is, a senior officer serving as a commander's deputy, and by extension the commander of a legion. Phrase to record: lēgātī ab hostibus missī. Recording both senses matters because the military sense and the diplomatic sense are equally common in historical prose and only context separates them.
Full form: obses, obsidis, m. and f. Sense here: 'hostages', people handed over as a guarantee. Note the third-declension stem obsid-, which the nominative obses conceals - this is exactly why the entry must carry the genitive. Related word worth recording alongside it: obsidiō, obsidiōnis, f., a siege, and obsideō, obsidēre, to besiege; all three descend from sedeō, to sit, with the prefix ob-, so the underlying image is of sitting in someone's way. Phrase: obsidibus acceptīs, an ablative absolute.
Full form: ōrō, ōrāre, ōrāvī, ōrātum. Sense here: 'begged', 'entreated' - and note the construction, because for this verb the construction is half the entry: ōrō takes an accusative of the person entreated and ut with the subjunctive for the request. Other sense: to speak formally, to plead a case, which is the sense that produces ōrātiō (a speech) and ōrātor. A word whose noun you already know is half-learned before you meet it.
Full form: fīniō, fīnīre, fīnīvī, fīnītum. Sense here: 'should end', transitive - to bring something to an end. Root: fīnis, fīnis, m., an end or boundary, and in the plural fīnēs, territory, the land inside the boundaries. Recording the root noun with the verb gives you two words for the price of one and explains the plural sense, which otherwise looks arbitrary. Phrase: bellum fīnīret.
Each entry carries a form, a sense in context, a second sense or a governed construction, and a phrase. Three of the four also carry a related word - lēgātus from lēgō, obses from sedeō, fīniō from fīnis. That last column is the one that compounds: after a term of entries like these, a large proportion of new words arrive already attached to something in the notebook, and the notebook stops growing linearly.
Result: Translation of the sentence: The envoys, who had been sent by the enemy, begged the consul to accept hostages and end the war. Four entries, each in four parts - dictionary form, sense in context, second sense or construction, phrase - and three of them cross-referenced to a root that was already known. The entry for obses also carries obsidiō and obsideō, which is three words recorded in the time one takes.
Typical mistakes
Active revision
Take the last twenty lines of Latin you read and mark every word you had to look up. Sort them into three piles: words that are in the AS Defined Vocabulary List and should not have needed looking up; words that are transparent compounds or derivatives of something you know; and words that are genuinely new. Only the third pile belongs in your notebook. The first pile is a revision problem and the second is a word-building problem, and treating all three as the same problem is why most vocabulary notebooks stop working by the second term.
Active recall
Recall the key points — then reveal.
Sources: OCR A Level in Latin (H443) specification (Cambridge OCR) · GCE AS and A level subject content for ancient languages (Department for Education)
Common verbal prefixes and the changes they cause
Take the simple verb pōnō, pōnere, posuī, positum (to place, to put). Work out the form and the meaning of the compounds with ad-, com-, dē-, dis-, ex-, im- (in-), op- (ob-) and prae-, and say in each case which part of the meaning comes from the prefix.
ad plus pōnō gives appōnō (the d assimilates to p): to place beside, to serve at table. com plus pōnō gives compōnō: to place together, hence to arrange, to compose, to settle a quarrel. Notice that con- has taken its com- form before the p, exactly as the table predicts, and that the metaphorical senses - composing a poem, settling a dispute - are all reachable from 'placing things together'.
dēpōnō: to place down, hence to lay aside, to give up, to deposit. dispōnō: to place apart, hence to distribute, to arrange at intervals, to draw troops up in position. dis- is the prefix of separation and appears also as dī- before certain consonants (dīmittō, dīvidō); it always adds the idea of apart, in different directions, or thoroughly.
expōnō: to place out, hence to set out, to expose, to explain - the last of these being a metaphor English shares in 'expound'. in plus pōnō gives impōnō (the n assimilates to m before p): to place upon, to impose, and with the dative of the thing placed upon. The dative is part of the word's meaning and belongs in the notebook entry with it.
ob plus pōnō gives oppōnō: to place against, to set in opposition, to oppose - again with a dative. praepōnō: to place in front, and idiomatically to put someone in charge of something, again with the dative: exercituī praepositus, put in command of the army. praepositus then functions as a noun meaning a commander, which is how a participle becomes a piece of vocabulary.
Every one of these compounds keeps the principal parts of the simple verb, adjusted for the prefix: appōnō, appōnere, apposuī, appositum; expōnō, expōnere, exposuī, expositum. This is the reason the exercise pays: one set of principal parts, learned once, serves nine verbs. When a compound's principal parts do surprise you - as with faciō, whose compounds are efficiō, efficere, effēcī, effectum with the weakened vowel throughout - the surprise is systematic and applies to the whole family.
In a passage you might meet cōnsul mīlitēs in colle disposuit or urbe captā, dux arma dēposuit. In the first, dis- plus the idea of placing gives 'the consul drew up his soldiers at intervals on the hill'; in the second, dē- gives 'the leader laid down his arms', that is, surrendered. Neither sentence needs a dictionary if pōnō and the prefix list are secure.
Result: Eight compounds - appōnō, compōnō, dēpōnō, dispōnō, expōnō, impōnō, oppōnō, praepōnō - all built from one set of principal parts, all with meanings predictable from the prefix, and three of them (impōnō, oppōnō, praepōnō) governing a dative that belongs in the vocabulary entry. The same exercise on ferō, mittō, veniō, cēdō and teneō yields another forty verbs.
Typical mistakes
Active revision
Choose five simple verbs from the core vocabulary - suggested: ferō, mittō, veniō, pōnō and cēdō. For each, write out every compound you can form with the prefixes ad-, con-, dē-, ex-, in-, ob-, prae-, prō-, re-, sub- and trāns-, giving the assimilated spelling where assimilation occurs and the English meaning. Then find, in whatever you are currently reading, three of the compounds you wrote down. If none of your fifty-five forms appears in a page of prose, you have chosen the wrong five verbs.
Active recall
Recall the key points — then reveal.
Sources: OCR A Level in Latin (H443) specification (PDF) (Cambridge OCR)
Constructed illustrative sentences (not quotations). Translate petō in each, and justify the choice from the sentence: (a) lēgātī ā cōnsule auxilium petīvērunt. (b) hostēs, castrīs relictīs, montēs petēbant. (c) mīles gladiō ducem petīvit. (d) puer patrem lacrimīs petēbat. (e) haec silva saepe ā mercātōribus petitur.
The object is an abstract noun, auxilium, and the source is marked with ā plus the ablative, ā cōnsule. Neither 'made for' nor 'attacked' can take that shape: you cannot make for help, and attacking help is meaningless. The sense is 'asked for': 'The envoys asked the consul for help.' The construction is part of the evidence - petō in this sense regularly has ā or ab with the person asked.
The object is a place, the subject is an army that has just abandoned its camp, and the tense is imperfect, describing a movement in progress. The sense is 'were making for': 'The enemy, having abandoned their camp, were making for the mountains.' Note that 'were attacking the mountains' is grammatically possible and narratively absurd, which is exactly the kind of judgement the mark scheme is testing.
The object is a person, the instrument is a sword in the ablative, and the subject is a soldier. The sense is 'attacked' or, more precisely here, 'made for with intent to strike': 'The soldier attacked the leader with his sword.' The ablative of instrument is the decisive evidence; it belongs to a physical action, not a request.
The object is a person, as in (c), and the instrument is in the ablative, as in (c) - but the instrument is tears, and the subject is a child. The physical sense will not carry tears. The sense returns to entreaty: 'The boy was entreating his father with tears.' This pair, (c) and (d), is the point of the exercise: the same grammatical shape, and the meaning decided by the lexical content of the ablative.
A passive, with the agent in ā plus the ablative and a wood as the subject. The sense is 'is visited', 'is resorted to', 'is sought out': 'This wood is often frequented by merchants.' English has no single verb that covers the Latin here, so the translator chooses one that fits the sentence and accepts that a different sentence would need a different one.
All five senses descend from one image: directed movement towards a target. Ask for, make for, attack, entreat, resort to - each is that image with a different kind of target and a different degree of literalness. Holding the image is what lets you choose quickly; holding five separate glosses means testing each against the sentence in turn, which is slow.
Result: (a) The envoys asked the consul for help. (b) The enemy, having abandoned their camp, were making for the mountains. (c) The soldier attacked the leader with his sword. (d) The boy was entreating his father with tears. (e) This wood is often frequented by merchants. One verb, five English verbs, and in each case the deciding evidence is the object, the construction or the lexical content of the ablative - never the dictionary order.
Typical mistakes
Active revision
Take the five words rēs, virtūs, fidēs, petō and ferō. For each, find five occurrences across your reading - not made-up sentences, but places in a real text - and write out the phrase plus the English rendering the context requires. Then write one sentence explaining what all five renderings have in common, which is the underlying territory. Do the same again in a month with five different words; twenty words treated this way is worth two hundred treated as glosses.
Active recall
Recall the key points — then reveal.
Sources: OCR A Level in Latin (H443) specification (Cambridge OCR)
Constructed illustrative clauses (not quotations). Identify the verb, give its principal parts, parse the form and translate: (a) haec cum dīxēre, discessērunt. (b) rēx urbem oppugnāre nōn ausus est. (c) mīlitēs nostrī hostēs fūdēre. (d) nōnne haec omnia nōstī? (e) pepercit victīs et superbōs domuit.
The -ēre ending is the alternative third person plural perfect indicative active, equivalent to dīxērunt. The verb is dīcō, dīcere, dīxī, dictum - a sigmatic perfect, with the -c- of the root combining with the -s- to give -x-. Parse: third person plural perfect indicative active. Translate 'when they had said these things, they departed'. The trap is real: dīxēre is one letter away from looking like an infinitive, and the sentence has no other finite verb to fall back on.
audeō, audēre, ausus sum - a semi-deponent, active in the present system and deponent in the perfect. So ausus est is third person singular perfect indicative, active in meaning: 'he did not dare'. Two errors are available here and both are common: reading it as a passive ('he was dared', which is meaningless) and reading it as a present. oppugnāre is a prolative infinitive completing ausus est.
Again the -ēre third plural, this time of fundō, fundere, fūdī, fūsum - a lengthened-vowel perfect, with the present-stem nasal infix dropped. The military sense of fundō is to rout: 'Our soldiers routed the enemy.' Note how much is packed into the recognition: the ending gives the person and tense, the vowel length gives the stem, and the object gives the sense.
A syncopated form of nōvistī, second person singular perfect of nōscō, nōscere, nōvī, nōtum. The perfect of nōscō means 'I have got to know' and therefore, in effect, 'I know' - a perfect with present force, like meminī and ōdī. So nōnne haec omnia nōstī? is 'surely you know all this?' Two things had to be undone at once: the syncope and the present force of the perfect.
pepercit is a reduplicated perfect: parcō, parcere, pepercī, parsum, to spare, and it governs the dative - hence victīs, dative plural of the perfect passive participle of vincō used as a noun, 'the conquered'. domuit is a -u- perfect: domō, domāre, domuī, domitum, to subdue, and it governs the accusative - superbōs, 'the proud'. Translate: 'He spared the conquered and subdued the proud.' The two participles used as nouns are a normal Latin economy and should be read as such.
Result: (a) When they had said these things, they departed. (b) The king did not dare to attack the city. (c) Our soldiers routed the enemy. (d) Surely you know all this? (e) He spared the conquered and subdued the proud. The five obstacles: the -ēre third plural twice, a semi-deponent perfect, a syncopated perfect with present force, and a reduplicated perfect governing the dative. Not one of them is an unknown word; every one of them is a known word in an unexpected coat.
Typical mistakes
Active revision
Write out, from memory, all four principal parts of these twenty verbs: agō, capiō, cadō, caedō, canō, cognōscō, currō, dō, dūcō, ferō, faciō, fīō, gerō, iubeō, mittō, pōnō, stō, tangō, tollō, volō. Then classify each perfect by its formation - v, u, s, lengthened vowel, reduplicated, unchanged - and write the third person plural perfect of each in both the -ērunt and the -ēre form. Mark every one you could not do without looking it up, and repeat the exercise a week later with only those.
Active recall
Recall the key points — then reveal.
Sources: OCR A Level in Latin (H443) specification (PDF) (Cambridge OCR)
The four questions to ask of an unknown word
Constructed illustrative passage (not a quotation): cōnsul, cōpiīs ante urbem īnstrūctīs, oppugnātiōnem parābat. mūrus tamen inexpugnābilis vidēbātur, et mīlitēs, longō itinere dēfatīgātī, imperia ducis praetermittere coepērunt. tandem obsidiōnem solvit et exercitum incolumem redūxit. Deduce inexpugnābilis, dēfatīgātī, praetermittere, obsidiōnem and incolumem.
Question one: the ending -is on a word standing after mūrus, with vidēbātur as the verb, makes it a third-declension adjective in the nominative singular, agreeing with mūrus - a complement after the passive of videor, 'seemed'. Question two: strip in- (negative, because this is an adjective), strip -ābilis (able to be), and the stem is expugn-, from expugnō, to storm or take by assault, itself ex- plus pugnō. Question three and four: a wall that seemed not-able-to-be-stormed. Translate 'the wall, however, seemed impregnable'.
Question one: -ātī after a masculine plural noun mīlitēs, set off by commas, is a perfect passive participle, nominative plural masculine, agreeing with mīlitēs. Question two: strip dē- (an intensifier here, 'utterly'), and fatīgātus from fatīgō, to tire out, is left; even if fatīgō is unknown, the phrase longō itinere in the ablative of cause supplies the rest. Question three: a participle agreeing with the soldiers and governed by an ablative of cause. Question four: soldiers, after a long march, are exhausted. Translate 'the soldiers, worn out by the long march'.
Question one: an infinitive, and coepērunt is a verb that takes a prolative infinitive, so this is what the soldiers began to do. Question two: praeter- (past, beyond) plus mittere (to send, to let go): to let go past, to pass over, to neglect. Question three: it governs imperia ducis, the accusative object - so whatever it means, it is done to the leader's orders. Question four: exhausted soldiers begin to do something to their commander's orders. 'They began to disregard the leader's orders.' The stem work alone nearly gets there; the object confirms it.
Question one: accusative singular, third declension, object of solvit. Question two: the suffix -iō, -iōnis makes an action noun; the stem obsid- is ob- plus sed-, the weakened form of sedeō, so the underlying image is sitting in someone's way. Question three: the object of solvō, to loosen or release - so something that can be loosened. Question four: after a failed assault, a commander who withdraws his army. A siege. Translate 'at last he raised the siege'. Note that solvere obsidiōnem is an idiom and 'loosened the siege' is not English; the mark scheme wants 'raised' or 'lifted'.
Question one: -em on an adjective agreeing with exercitum, accusative singular. Question two: in- negative plus colum-, related to a verb of harming that you may not know. This is the case where step two fails, and that is worth practising too. Question three: an adjective describing the army that the commander led back. Question four: the narrative is a withdrawal after an unsuccessful siege, and the sentence is plainly saying something favourable about the state of the army. 'Safe', 'unharmed', 'intact'. Translate 'and led his army back unharmed'. The guess is constrained enough by steps one, three and four to be worth a mark even though step two produced nothing.
Result: Full translation: The consul, having drawn up his forces before the city, was preparing an assault. The wall, however, seemed impregnable, and the soldiers, worn out by the long march, began to disregard the leader's orders. At last he raised the siege and led his army back unharmed. Four of the five words were fully recoverable from prefix, suffix and stem; the fifth was recovered from its grammatical slot and the narrative alone - which is the case the four-question order is designed for.
Typical mistakes
Active revision
Ask someone to take a passage of Latin prose at your level and blank out six words at random with a marker. Translate the passage anyway, and for each blanked word write down, in order, the four answers: what its ending must have been, what the sentence needs it to mean, what part of speech it is, and your best English word. Then uncover the six words and score yourself. You will find that the grammatical predictions are almost always right and the lexical ones are right about half the time - which is exactly the ratio that makes the method worth using.
Active recall
Recall the key points — then reveal.
Sources: OCR A Level Latin (H443) - specification at a glance (Cambridge OCR)
References & sources