Entry 2 senses · 2 variants Webster, 1913 Miff /(mĭf)/ · IPA /mɪf/ n. v. t. 01 n. A petty falling out; a tiff; a quarrel; offense. 1. A petty falling out; a tiff; a quarrel; offense. 02 v. t. To offend slightly. 1. To offend slightly.[Colloq.]