Entry 1 sense Webster, 1913 Geniality /jēnˌ-ē-ăl'-ət-ē/ · Ge·ni·al·i·ty · IPA /dʒˌiːniːˈælətiː/ 01 n. The quality of being genial; sympathetic cheerfulness; warmth of disposition and manners. 1. The quality of being genial; sympathetic cheerfulness; warmth of disposition and manners.