indefatigable

== English == === Etymology === From Middle French, from Latin indēfatīgābilis (“untiring”), from in- (“not”) + dēfatīgō (“to tire out”). === Pronunciation === (Received Pronunciation) IPA(key): /ˌɪn.dɪˈfæt.ɪ.ɡə.bəl/ (General American, General Australian) IPA(key): /ˌɪn.dəˈfæt.ɪ.ɡə.bəl/, [ˌɪn.dəˈfæɾ.ɪ.ɡə.bəl] (sometimes proscribed) IPA(key): /ˌɪn.dɪ.fəˈti.ɡə.bəl/, /ˌɪn.də-/ Hyphenation: in‧de‧fa‧tig‧a‧ble === Adjective === indefatigable (comparative more indefatigable, superlative most indefatigable) Extremely persistent and untiring. Synonyms: inexhaustible, relentless, tireless, unflagging, unsinkable, untiring, unwearying Antonym: (much less common) defatigable ==== Derived terms ==== ==== Translations ==== ==== See also ==== indissuadable