(uncountable) The chance or random quality of an event or circumstance. / (countable) A chance or random event or circumstance.

(rare) By happenstance; occurring due to random chance.

plural of happenstance

superlative form of happening: most happening

(archaic) third-person singular simple present indicative form of happen

(informal, originally regional) Coincidence.

Characterized by happenstance; chance; fortunate or unfortunate.

plural of happenchance

(archaic) simple past tense and past participle of happen

(archaic) second-person singular simple present form of happen