We found 3 dictionaries that define the word happening upon:

General (3 matching dictionaries)

1. happening upon: Collins English Dictionary
2. happening upon: Vocabulary.com
3. happening upon: Wiktionary

▸ Words similar to happening upon ▸ Usage examples for happening upon ▸ Idioms related to happening upon ▸ Wikipedia articles (New!) ▸ Words that often appear near happening upon ▸ Rhymes of happening upon ▸ Invented words related to happening upon