quit 
(kwĭt)
(kwĭt)v. quit also quit·ted (kwĭtĭd), quit·ting, quits
v.tr.
1.
a. To cease or discontinue: asked them to quit talking; quit smoking. See Synonyms at stop.
b. To resign from or relinquish: quit a job.
2.
a. To depart from; leave: "You and I are on the point of quitting the theater of our exploits" (Horatio Nelson).
b. To leave the company of: had to quit the gathering in order to be home by midnight.
3. Computers To exit (an application).
4.
a. To rid oneself of by paying: quit a debt.
b. To release from a burden or responsibility.
5. Archaic To conduct (oneself) in a specified way: Quit yourselves like adults.
v.intr.
1. To cease an action or cease working properly; stop: The car quit on the hill.
2. To abandon an activity out of frustration or despair; give up: saw that he would never get the part and quit.
3. To resign from or leave a job.
adj.
Absolved of a duty or an obligation; free.
[Middle English quiten, to release, from Old French quiter, from Medieval Latin quiētāre, quītāre, from Latin quiētus, at rest; see QUIET.]