"A person who renunciates or gives up something; especially a religious person who has renounced a secular way of life", Late 19th cent. From renunciate.[renunciate etymology, renunciate origin, 英语词源]
"To renounce, give up (something)", Mid 17th cent.; earliest use found in Thomas Blount (1618–1679), antiquary and lexicographer. From classical Latin renuntiāt-, past participial stem of renuntiārerenounce.