Entry 1 sense Webster, 1913 Creepiness /(-ĭ-nĕs)/ · Creep·i·ness · IPA /krˈiːpiːnɪs/ 01 n. An uneasy sensation as of insects creeping on the skin. 1. An uneasy sensation as of insects creeping on the skin. “She felt a curious, uneasy creepiness.” — Mrs. Alexander.