We found 2 dictionaries that define the word be out to lunch:

General (1 matching dictionary)

1. be out to lunch: Cambridge Advanced Learner's Dictionary

Miscellaneous (1 matching dictionary)

2. be out to lunch: Idioms

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