verb

1. To render unable; to take away an ability of, as by crippling.

2. (chiefly of a person) To impair the physical or mental abilities of; to cause a serious, permanent injury.

   “Falling off the horse disabled him.”

3. To deactivate, to make inoperational (especially of a function of an electronic or mechanical device).

   “The pilot had to disable the autopilot of his airplane.”

Synonyms: deactivate, non-standard, unable

adjective

1. Lacking ability; unable.