complain Pronunciation: /kəmˈpleɪn/Translate complain | into French | into Italian | into Spanish German translation of complainv.i. sich beklagen (about, at über bei) (+ Akk.) (to bei) complain of sth. = über etw. (Akk.) klagencomplain in other Oxford dictionaries Definition of complain in the British & World English dictionary Definition of complain in the US English dictionary