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Definition of indefatigable

The word indefatigable uses 13 letters:aabdeefgiilnt.

INDEFATIGABLE is playable in:

Words With Friends24
Scrabble US20
Scrabble UK20

a. - Incapable of being fatigued; not readily exhausted; unremitting in labor or effort; untiring; unwearying; not yielding to fatigue; as, indefatigable exertions, perseverance, application. 2