We found one dictionary that defines the word be up to much:

Miscellaneous (1 matching dictionary)

1. be up to much: Idioms

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