/ rɪˌnʌnsiˈeɪʃn; NAmE / noun ( formal )
1.
[ U , C ] an act of stating publicly that you no longer believe sth or that you are giving sth up :
the renunciation of violence
2.
[ U ] the act of rejecting physical pleasures, especially for religious reasons
SYN self-denial
—see also renounce
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WORD ORIGIN
late Middle English : from late Latin renuntiatio(n-) , from Latin renuntiare protest against, from re- (expressing reversal) + nuntiare announce.