IPA: /ˈhæpənˌstæns/
KK: /ˈhæpənˌstæns/
An event or situation that occurs by chance, rather than being planned or intended.
Their meeting was pure happenstance, as they both happened to be at the same café at the same time.
Happenstance → It is formed from "happen" (from Middle English *happen*, meaning to occur or take place) and "stance" (from Latin *stare*, meaning to stand). The word "happenstance" refers to an occurrence that stands by chance or is incidental.
Think of something that 'occurs' ('happen') by 'standing' ('stance') as a coincidence — that's what happenstance means.