We found 2 dictionaries that define the word proper authority:

General (1 matching dictionary)

1. proper authority: TheFreeDictionary.com

Tech (1 matching dictionary)

2. DOD Dictionary of Military Terms (No longer online)

Phrases: taking action without proper authority, more... ▸ Words similar to proper authority ▸ Usage examples for proper authority ▸ Idioms related to proper authority ▸ Wikipedia articles (New!) ▸ Words that often appear near proper authority ▸ Rhymes of proper authority ▸ Invented words related to proper authority