We found one dictionary that defines the word frown on upon sth:

General (1 matching dictionary)

1. frown on/upon sth: Cambridge Advanced Learner's Dictionary

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