Vocabulary · Synonyms & Antonyms

Same meanings and opposite meanings

A synonym is a word that means the same as another (big = large = huge). An antonym means the opposite (hot ↔ cold). Good readers build a wide vocabulary and choose the word that fits the sentence best. Learn to match meaning, word class and shade below.

1 Synonyms — words that mean the SAME

A synonym is a word with the same or a very similar meaning to another word.

big = large, huge, enormous · happy = glad, cheerful, pleased ✓

Tip: 'syn' = together/same.

2 Antonyms — words that mean the OPPOSITE

An antonym is a word that means the opposite of another word.

hot ↔ cold · up ↔ down · brave ↔ cowardly ✓

Tip: 'ant' = against/opposite.

3 Match the word class

A synonym or antonym should be the same kind of word — swap a verb for a verb, an adjective for an adjective.

run → sprint (both verbs) · tiny → enormous (both adjectives) ✓

4 Shades of meaning

Some synonyms are stronger than others. Choose the one that fits the sentence best.

warm → hot → boiling (getting stronger) · damp → wet → soaked ✓

5 Prefixes that make antonyms

Adding a prefix like un-, in-, dis- often makes the opposite.

happy → unhappy · possible → impossible · agree → disagree ✓

The 30-second method

How to handle synonym/antonym questions fast

Same or opposite? Read the question word carefully (synonym = same, antonym = opposite).
Know the word's meaning — picture it in a sentence.
Match the word class (verb for verb, adjective for adjective).
Check the shade — is it too strong or too weak?
Spot opposite prefixes (un-, dis-, in-) for antonyms.

10 worked examples

Read the question, then the answer.

1. Synonym for 'quick'?

fast — same meaning (Rule 1).

2. Antonym for 'quick'?

slow — opposite meaning (Rule 2).

3. Synonym for 'begin'?

start — same meaning (Rule 1).

4. Antonym for 'begin'?

end / finish — opposite (Rule 2).

5. Synonym for 'tired'?

weary / exhausted — same (Rule 1).

6. Antonym for 'ancient'?

modern / new — opposite (Rule 2).

7. Strongest: warm, hot or boiling?

boiling — the strongest shade (Rule 4).

8. Antonym of 'kind' using a prefix?

unkind — add 'un-' (Rule 5).

9. Synonym for 'shout' (a verb)?

yell — both verbs (Rule 3).

10. Antonym for 'brave'?

cowardly — opposite (Rule 2).

Mock paper — 20 questions

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Pick one answer (A–E) for each question. The timer starts when you answer your first.