Entry 1 sense Webster, 1913 Suitability /so͞otˌ-əb-ĭl'-ĭt-ē/ · Suit·a·bil·i·ty · IPA /ˌsutəˈbɪləti/ 01 n. The quality or state of being suitable; suitableness. 1. The quality or state of being suitable; suitableness.