We found 2 dictionaries that define the word break in upon:

General (2 matching dictionaries)

1. break in upon: Merriam-Webster
2. break in upon: Dictionary.com

Phrases: to break in upon, more... ▸ Words similar to break in upon ▸ Usage examples for break in upon ▸ Idioms related to break in upon ▸ Wikipedia articles (New!) ▸ Words that often appear near break in upon ▸ Rhymes of break in upon ▸ Invented words related to break in upon