waneanother word for 'decrease' meaning to gradually decline in strength or intensityEnthusiasm for the reform programme has waned as its limitations become apparent.NoteEnthusiasm for the reform programme has waned as its limitations become apparent.Elon.io is an online learning platformWe have an entire course teaching IELTS Vocabulary — Band 7+ grammar and vocabulary.Start learning IELTS Vocabulary — Band 7+ now