defatigable

== English == === Etymology === From Latin defatigatus, past participle of defatigare (“to tire or weary”). === Pronunciation === (UK) IPA(key): [dɪˈfætɪɡəbəɫ] === Adjective === defatigable (comparative more defatigable, superlative most defatigable) (very rare) Easily tired or wearied; capable of being fatigued. ==== Usage notes ==== Both fatigable and defatigable mean "able to be fatigued", but generally only fatigable is used in the medical sense (such as when referring to a reflex that is easily exhaustible/fatigable). Only in the word indefatigable (= in- + defatigable) does modern English regularly encounter a reminder of the rarer synonym of fatigable, but the word indefatigable tends to be used in a figurative sense (= remarkably persistent) rather than a literal/medical one (= remarkably immune to fatigue in the sense of having high physical fitness). The prefix de- in defatigable appears in its intensifying sense, not in its undoing sense. ==== Derived terms ==== ==== References ==== Websters 1902.