Having or showing a capacity for persistent effort; not tiring or relenting:
Characterized by earnest, steady effort; hardworking; diligent
The definition of dogged is stubborn, persistent and not giving up easily.
Unyielding in severity or strictness; unrelenting:
The definition of tired is being bored with something, or something that has become stale or being fatigued and in need of rest.
The definition of inexhaustible is something that cannot be used up, or has limitless energy.
Unrelenting or unremitting:
Actual, not just nominal; participating
Persevering and careful in work; industrious
Constantly repeated; continued
The definition of tenacious is someone or something that holds on firmly.
The definition of unremitting is persistent or not letting up.
Having little capacity to withstand pressure or strain:
Irksome; tedious; tiresome
Always reliable; certain
Having or showing a capacity for protracted effort, regardless of difficulty or frustration
Find another word for indefatigable. In this page you can discover 28 synonyms, antonyms, idiomatic expressions, and related words for indefatigable, like: tireless, energetic, industrious, sedulous, dogged, relentless, tired, inexhaustible, unwearied, active and diligent.