Definitions

indefatigable

[in-di-fat-i-guh-buhl] / ˌɪn dɪˈfæt ɪ gə bəl /

ADJECTIVE

untiring

Synonyms

STRONGEST

assiduous diligent dogged energetic inexhaustible painstaking relentless tireless unflagging unwavering vigorous

WEAK

active bound and determined dead set on determined hell-bent industrious ironclad nose to grindstone patient persevering persistent pertinacious sedulous steadfast stop-at-nothing strenuous unfaltering unflinching unremitting unwearied unwearying

Antonyms

STRONGEST

changing idle inactive indifferent lazy lethargic negligent tired wavering

WEAK

fatigued weary

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Youngman was the headteacher at Indefatigable, a naval boarding school in Llanfair PG, Anglesey.

From BBC • Nov. 26, 2021

Indefatigable to the point of grating: Jamie is such a winsome paragon that viewers may start feeling less beguiled than railroaded by the umpteenth musical number celebrating his you-go-boy self-belief.

From Washington Post • Sep. 8, 2021

Indefatigable and protean, Clinton read the disaffected landscape and adapted in her characteristic style—with a policy agenda.

From The New Yorker • Oct. 24, 2016

Indefatigable assistant Ronda Kamihira has something more difficult to work with, however, and that's how Caitlyn sees herself at the country club.

From Los Angeles Times • Sep. 7, 2015

Indefatigable at his easel, Berchem acquired a manner both easy and expeditious; to see him work, painting appeared a mere diversion to him.

From Six Centuries of Painting by Davies, Randall

Vocabulary lists containing indefatigable

Animal Farm

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