Entry 1 sense Webster, 1913 Amiability /āmˌ-ē-əb-ĭl'-ət-ē/ · A·mi·a·bil·i·ty · IPA /eɪ.mi.ʌˈbɪl.ə.ti/ 01 n. The quality of being amiable; amiableness; sweetness of disposition. 1. The quality of being amiable; amiableness; sweetness of disposition. “Every excellency is a degree of amiability.” — Jer. Taylor.