Vocabulary and Idiomatic Usage
What the vocabulary section tests
Vocabulary and Idiomatic Usage tests word meaning in context: synonyms and antonyms, one-word substitution, idioms, phrasal verbs, prefixes and suffixes, collocations and commonly confused words. The section rewards precision, not approximate meaning.
Core rules
- A synonym must fit the sentence. Replace the original word with your candidate and test the grammar and tone.
- Antonyms should match the word class: the antonym of an adjective is an adjective.
- Idioms are fixed expressions; their meaning is not the sum of the words. Learn the whole phrase with a sentence.
- Phrasal verbs change meaning with the particle: 'give in' (surrender), 'give up' (quit), 'give away' (donate or reveal).
- For one-word substitution, check number and form: 'a person who...' needs a noun.
- Learn prefixes by function: 'mis-' wrongly, 'un-' not, 'over-' excessively, 'under-' insufficiently.
Worked example
Sentence: The manager turned down the proposal. Question: Replace 'turned down' with a one-word verb. Reasoning: 'Turned down' here means rejected, not physically folded down. 'Refused' is close but usually takes a person or an offer; 'rejected' fits a proposal. The answer must preserve the past tense, so 'rejected' is better than 'reject'. This shows why context and tense both matter.
Traps
Choosing a synonym with the wrong register; giving a literal reading of an idiom; confusing 'bring up' (raise) with 'bring about' (cause); using 'uninterested' for 'disinterested'; and writing a phrase when a single word is demanded.
Revision move
Keep a four-column vocabulary log: word, sentence from the textbook, meaning in that sentence, one personal sentence. Idioms should be learned in pairs of similar meaning so that near-misses are visible.