We found one dictionary that defines the word unhappened:

General (1 matching dictionary)

1. unhappened: Wiktionary

Opposite: happened, occurred, took place ▸ Words similar to unhappened ▸ Usage examples for unhappened ▸ Idioms related to unhappened ▸ Wikipedia articles (New!) ▸ Words that often appear near unhappened ▸ Rhymes of unhappened ▸ Invented words related to unhappened