unauthorized

Meanings

1. 1
   adj

   without official authorization

   an unauthorized strike

2. 2
   adj

   Without official authorization.

   The dangers of scofflawry vary wildly. The person who illegally spits on the sidewalk remains disgusting, but clearly poses less risk to others than the company that illegally buries hazardous chemical waste in an unauthorized location.

3. 3
   adj

   not endowed with authority

4. 4
   adj

   Not having any authority.

Etymology

From un- + authorized.