Synonyms & related words for indefatigable

Find synonyms, related words, and the definition of indefatigable — including tireless, unwearying, unflagging, untiring, indomitable, unremitting. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to indefatigable

Explore words related to indefatigable — words associated with it, words that go with it, and its nearest matches in meaning. Related words include tirelessness, indefatigably, indomitableness, indefatigability, tirelessly, untiringly, unflaggingly, indomitably. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for indefatigable

Common synonyms for indefatigable include tireless, unwearying, unflagging, untiring, indomitable, unremitting, assiduous, sedulous — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does indefatigable come from?

The word indefatigable breaks down into one root of Latin origin: the root fatig-, from Latin fatigo (“tire, weary”). Explore each root to see other English words built from the same source.