Latin Vocabulary and Idiom
What the vocabulary domain tests
This domain rewards a working core vocabulary of roughly 1,000–1,500 high-frequency words plus the fixed phrases that dictionaries list separately. Questions often ask for the meaning of a phrase in context, a synonym, or the English derivative that reveals the Latin root.
Core vocabulary strategy
- Learn words in families: duco, ducere, duxi, ductus yields dux, ducis (leader), ductus (a leading), deducere (lead away), and English ductile, conduct.
- Group by semantic field: warfare (arma, castra, signum, legio), civic life (senatus, consul, forum, lex), emotion (metus, spes, ira, gaudium).
- Note common prefixes: ab- away, ad- toward, con- together, in- in or not, per- through, re- back, sub- under.
- Learn prepositions with their case: in and sub take ablative for place where and accusative for motion; super takes accusative; cum takes ablative.
Idioms
Idioms are fixed phrases, so translate the whole, not the parts:
- gratias agere + dative - to thank
- poenas dare - to pay the penalty
- castra ponere - to pitch camp
- in animo habere - to intend
- opus est + ablative - there is need of
- consilium capere - to form a plan
Worked example
Imperator militibus gratias egit quod fortiter pugnaverunt. Gratias egit is literally 'did thanks', but the idiom means 'thanked'; militibus is dative, the person thanked. Quod introduces a causal clause: 'because they had fought bravely'. Translation: 'The general thanked the soldiers because they had fought bravely.'
Traps
- Rendering gratias ago word for word as 'I do thanks'.
- Confusing opus (need, work) with opera (effort) and opes (resources).
- Assuming a preposition keeps one case; in and sub do not.
- Guessing a derivative's meaning instead of checking the Latin root.