Commit and Quit

commit

(v.t.) To give in trust; to put into charge or keeping; to intrust; to consign; -- used with to, unto.
(v.t.) To confound.
(v.i.) To sin; especially, to be incontinent.
(v.t.) To put in charge of a jailor; to imprison.
(v.t.) To join for a contest; to match; -- followed by with.
(v.t.) To pledge or bind; to compromise, expose or endanger by some decisive act or preliminary step; -- often used reflexively; as, to commit one's self to a certain course.
(v.t.) To do; to perpetrate, as a crime, sin or fault.

Webster's Revised Unabridged Dictionary

Perform an act, usually with a negative connotation.
- usage: "perpetrate a crime"; "pull a bank robbery"
- synonyms: perpetrate, pull
Give entirely to a specific person, activity, or cause.
- usage: "She committed herself to the work of God"; "give one's talents to a good cause"; "consecrate your life to the church"
- synonyms: give, dedicate, consecrate, devote
Cause to be admitted; of persons to an institution.
- usage: "After the second episode, she had to be committed"; "he was committed to prison"
- synonyms: institutionalize, institutionalise, send, charge
Confer a trust upon.
- usage: "The messenger was entrusted with the general's secret"; "I commit my soul to God"
- synonyms: entrust, intrust, trust, confide
Make an investment.
- usage: "Put money into bonds"
- synonyms: invest, put, place
Engage in or perform.
- usage: "practice safe sex"; "commit a random act of kindness"
- synonyms: practice

(DoD) The process of committing one or more air interceptors or surface-to-air missiles for interception against a target track.

Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.

quit

Put an end to a state or an activity.
- usage: "Quit teasing your little brother"
- synonyms: discontinue, stop, cease, give up, lay off
Give up or retire from a position.
- usage: "The Secretary of the Navy will leave office next month"; "The chairman resigned over the financial scandal"
- synonyms: leave office, step down, resign
Go away or leave.
- synonyms: depart, take leave
Turn away from; give up.
- usage: "I am foreswearing women forever"
- synonyms: foreswear, renounce, relinquish
Give up in the face of defeat of lacking hope; admit defeat.
- usage: "In the second round, the challenger gave up"
- synonyms: drop out, give up, fall by the wayside, drop by the wayside, throw in, throw in the towel, chuck up the sponge

(a.) To meet the claims upon or expectations entertained of; to conduct; to acquit; -- used reflexively.
(a.) To discharge, as an obligation or duty; to meet and satisfy, as a claim or debt; to make payment for or of; to requite; to repay.
(a.) To carry through; to go through to the end.
(a.) To have done with; to cease from; to stop; hence, to depart from; to leave; to forsake; as, to quit work; to quit the place; to quit jesting.
(imp.&p.p.) of Quit.
(v.i.) To away; to depart; to stop doing a thing; to cease.
(n.) Any one of numerous species of small passerine birds native of tropical America. See Banana quit, under Banana, and Guitguit.
(v.) Released from obligation, charge, penalty, etc.; free; clear; absolved; acquitted.
(a.) To release from obligation, accusation, penalty or the like; to absolve; to acquit.
(a.) To set at rest; to free, as from anything harmful or oppressive; to relieve; to clear; to liberate.

Webster's Revised Unabridged Dictionary