unkeepable

English

Etymology

From un- +‎ keepable.

Adjective

unkeepable (not comparable)

1. Not keepable.
   • 1966, William Brandon, The Last Americans: the Indian in American culture, page 239:

     England added further unkeepable promises guaranteeing to restrain English settlement if Pontiac would demobilize his allies and leave the restraining up to the English.