Entry 2 senses Webster, 1913 debilitated · IPA /dɪˈbɪlɪteɪtəd/ 01 adj. lacking strength or vigor; weakened. 1. lacking strength or vigor; weakened. 2. weakened due to illness. Syn. adynamic, asthenic, enervated. — Syn. -- enfeebled, infirm, seedy.