We found one dictionary that defines the word be proper:

Business (1 matching dictionary)

1. be proper: Legal dictionary

Phrases: be appropriate or proper for, more... ▸ Words similar to be proper ▸ Usage examples for be proper ▸ Idioms related to be proper ▸ Wikipedia articles (New!) ▸ Words that often appear near be proper ▸ Rhymes of be proper ▸ Invented words related to be proper