We found one dictionary that defines the word fall in with sb:

General (1 matching dictionary)

1. fall in with sb: Cambridge Advanced Learner's Dictionary

▸ Words similar to fall in with sb ▸ Usage examples for fall in with sb ▸ Idioms related to fall in with sb ▸ Wikipedia articles (New!) ▸ Words that often appear near fall in with sb ▸ Rhymes of fall in with sb ▸ Invented words related to fall in with sb