unpowered

adj

1. (not-comparable)Lacking in power, especially electrical power.
2. (not-comparable)Not using or requiring power, especially artificial power.

   “an unpowered boat; an unpowered glider”

   “The unpowered steering on the early model tandem steer British-built Fodens was almost unbelievable at times.”

verb

1. (form-of, participle, past)simple past and past participle of unpower