Happenupon

2 clues
Run (into)
Discover unexpectedly
Similar answers:
Accentshappen
Accentswillhappen
Accidentshappen
Aintgonnahappen
Andhappenedtospot
Assonancewillhappen
Bazaarhappenings
Boundtohappen
Chapped
Chappedlips
Chappelle
Cleanuponesact
Davechappelle
Didnothappen
Doesnthappenatonce
Frownupon
Gainupon
Happen
Happened
Happening