intermediate Level

Indefatigable

(Of a person or their efforts) persisting tirelessly.

✓ Synonyms

Tirelessunflaggingunweariedrelentless

✗ Antonyms

Idlefeeblelazy

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This word appears in intermediate set 5

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About "Indefatigable"

Indefatigable is a vocabulary word commonly tested on the SAT. Understanding this word and its synonyms (Tireless, unflagging) can help you answer Reading and Writing questions more accurately. The opposite meaning (antonyms) includes words like Idle and feeble.

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