We found 2 dictionaries that define the word be on another planet:

General (1 matching dictionary)

1. be on another planet: Cambridge Advanced Learner's Dictionary

Miscellaneous (1 matching dictionary)

2. be on another planet: Idioms

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