indefatigable
Translation
indefatigable, tireless, unwearying
Examples
She was an indefatigable campaigner for human rights.
She was an indefatigable campaigner for human rights.
His indefatigable spirit helped him succeed.
His indefatigable spirit helped him succeed.
Grammar Patterns
indefatigable ((noun)) never giving up or getting tired She is an indefatigable leader.
Similar Words
Synonyms: tireless, persistent, unflagging; Antonyms: lethargic, lazy, fatigued
Etymology
From 'in-' (not) + 'de-' (down, away) + 'fatigare' (to tire). Literally 'not able to be tired out'.
Memory Tips
Break it down: 'in' (not) + 'de-fatigue-able'. Someone who is not able to be fatigued.