en·fee·ble \ə̇nˈfēbəl, en-\transitive verb (enfeebled ; enfeebled ; enfeebling \-b(ə)liŋ\ ; enfeebles) Etymology: Middle English enfeblen, from Middle French enfeblir, from Old French, from en- en- (I) + feble, foible feeble — more at feeble : to make feeble < a man enfeebled by hunger > : deprive of strength : reduce the strength of < a country enfeebled by civil war > Synonyms:see weaken