From WordNet (r) 3.0 (2006):
quit
v 1: put an end to a state or an activity; "Quit teasing your
little brother" [syn: discontinue, stop, cease, give
up, quit, lay off] [ant: bear on, carry on,
continue, preserve, uphold]
2: give up or retire from a position; "The Secretary of the Navy
will leave office next month"; "The chairman resigned over
the financial scandal" [syn: leave office, quit, step
down, resign] [ant: take office]
3: go away or leave [syn: depart, take leave, quit] [ant:
stay]
4: turn away from; give up; "I am foreswearing women forever"
[syn: foreswear, renounce, quit, relinquish]
5: give up in the face of defeat of lacking hope; admit defeat;
"In the second round, the challenger gave up" [syn: drop
out, give up, fall by the wayside, drop by the
wayside, throw in, throw in the towel, quit, chuck up
the sponge] [ant: enter, participate]