quit

(verb) put an end to a state or an activity. Synonyms: discontinue, stop, cease, give up, lay off. Example: "Quit teasing your little brother."

(verb) give up or retire from a position. Synonyms: leave office, step down, resign. Examples: "The secretary of the navy will leave office next month." "The chairman resigned over the financial scandal."

(verb) go away or leave. Synonyms: depart, take leave.

(verb) turn away from; give up. Synonyms: foreswear, renounce, relinquish. Example: "I am foreswearing women forever."

(verb) give up in the face of defeat of lacking hope; admit defeat. Synonyms: drop out, give up, fall by the wayside, drop by the wayside, throw in, throw in the towel, chuck up the sponge. Example: "In the second round, the challenger gave up."