Entry 1 sense Webster, 1913 Peevishness · Pee·vish·ness · IPA /ˈpivɪʃnəs/ 01 n. The quality of being peevish; disposition to murmur; sourness of temper. 1. The quality of being peevish; disposition to murmur; sourness of temper. Syn. See Petulance.