To keep one's own business private; to be careful, circumspect, or discreet in what one says concerning one's own deeds, situation, or thoughts.

(computing) A keyboard shortcut.

plural of key exchange

simple past tense and past participle of keep up

present participle of keep up

An electronic device that serves the purpose of a car key by locking and unlocking a vehicle remotely.

plural of key logger

(idiomatic) To be tough; to have endurance; to have the capacity to absorb stress or damage, but still be able to function.

plural of keyboard shortcut

(computing) A key or key combination involved in a keyboard shortcut.