unhappening adjective 1noun 1forms 3 adjective1 •(India) Uneventful.The next few months were dark and unhappening for Gautam. — 2022 noun1 •(rare) A happening that fails to occur; a nonevent.British aid to Bulgarian partisans was defined, by silence, as a non-event, an unhappening. No official statement acknowledging this aid has ever been made. — 1997 formsunhappenings · more unhappening · most unhappening