Found 3 synonyms
take place, come about, befall, materialize, have taken place, transpire, originate.
go on (verb)
pass, be, come.
More happen synonyms
happen there, really happen, ever happen, derive, undergo, happening, arrive, recur, repeat, fail, come true, suffer, emerge, appear, arise,
Synonyms "happen" in the picture
Synonyms with "happen"