We found 3 dictionaries that define the word be on for something:

General (3 matching dictionaries)

1. be on for something: Longman Dictionary of Contemporary English

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