Having or showing a capacity for persistent effort; not tiring or relenting:
Unyielding in severity or strictness; unrelenting:
Characterized by earnest, steady effort; hardworking; diligent
The definition of dogged is stubborn, persistent and not giving up easily.
The definition of inexhaustible is something that cannot be used up, or has limitless energy.
Unrelenting or unremitting:
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.
Always reliable; certain
The definition of tired is being bored with something, or something that has become stale or being fatigued and in need of rest.
Having little capacity to withstand pressure or strain:
Irksome; tedious; tiresome
Actual, not just nominal; participating
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, relentless, energetic, industrious, sedulous, unflagging, dogged, tired, inexhaustible, unwearied and active.