Entry 1 sense Webster, 1913 Advisability /ădˌ-vīzˌ-əb-ĭl'-ĭt-ē/ · Ad·vis·a·bil·i·ty · IPA /ædˌvaɪz.əˈbɪl.ə.ti/ 01 n. The quality of being advisable; advisableness. 1. The quality of being advisable; advisableness.