MIFF Meaning of MIFF in English v. & n. colloq. v.tr. (usu. in passive) put out of humour; offend. n. 1 a petty quarrel. 2 a huff. [ perh. imit.: cf. G muff, exclam. of disgust ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012