Skip to content

Search the dictionary

AaDictionaryFeatured meanings ⇄ThesaurusNuanced synonyms ¶Academic writingEvidence and analysis ✓ProfessionalWorkplace language ⌛Word originsEtymology and roots ∑SubjectsSpecialist dictionaries ⠿Word clustersConnected vocabulary #CrosswordPlay by cluster ≡ArticlesExplore language

Home / Dictionary / Undefatigable

Undefatigable

word

Adjective

Indefatigable.

More about this word

Synonyms and related words

Explore this word

Explore Undefatigable

Thesaurus entry Play a vocabulary crossword Explore word origins Subject dictionaries

Meanings, connections and specialist vocabulary made easier to explore.

ExploreDictionary Thesaurus Subject dictionaries Word clusters Types of dictionaries

LearnAcademic writing Professional vocabulary Word origins Articles

SiteCollections Crossword Privacy Terms Help

© 2026 Academic Dictionary. A brand of Exceptional Web Brands Limited. Built for precise, useful language.