released from obligation, penalty, etc.; free, clear, or rid (usually followed by of): quit of all further responsibilities.
Origin: 1175–1225; (adj.) Middle English quit(te) exempt, freed, acquitted of (< Old French quite) < Medieval Latin quittus, by-form of quītus (≫ Middle English quit(e); see quite), for Latin quiētusquiet1; (v.) Middle English quit(t)en to pay, acquit oneself < Old French quit(t)er < Medieval Latin quittāre, quiētāre to release, discharge, Late Latin quiētare to put to rest, quiet1
early 13c., "free, clear," from O.Fr. quite "free, clear," from L. quietus "free" (in M.L. "free from war, debts, etc."), also "calm, resting" (see quiet). The verb is first attested c.1300, "to set free, redeem" (usually of a debt or suspicion); sense of "leave" is attested
from late 14c.; that of "to leave (a place)" is from c.1600; that of "stop" (doing something) is from 1640s. Meaning "to give up" is from mid-15c.; quitting time is from 1835; quitter as an insult is 1881, American English. Quits "even" (with another) is from 1660s.