mismatch /ˈmɪs.mæt͡ʃ/noun 1/ˌmɪsˈmæt͡ʃ/ verb 1forms 3 noun1 •Something that does not match; something dissimilar, inappropriate or unsuitable. mismatch /ˌmɪsˈmæt͡ʃ/ verb1 •To match unsuitably; to fail to match formsmismatched · mismatching · mismatches