unbraked
adjective
un·braked ˌən-ˈbrākt 
: not braked : having no brakes
an unbraked trailer
: not held by a brake an unbraked wheelchair
Example Sentences
Recent Examples on the Web Though his Impulse came threaded from the factory for a muzzle brake, it had been left unbraked. 
Derek Mcdonald, Outdoor Life, 5 Jan. 2021
Derek Mcdonald, Outdoor Life, 5 Jan. 2021 Word History
First Known Use
1877, in the meaning defined above
- back is to/against the wall
- back issues
- back judge
- back line
- back lines
- back load
- back loop jump
- back lot
- back lots
- back marker
- back matter
- back mutation
- back nine
- back number
- back of
- back of beyond
- back of one's hand
- back of one's mind
- back of the hand
- back off
- back oneself into a corner
- back out
- back parlor
- back pass
- back passage