abnegation (n.)

late 14c., "a negative assertion," c. 1500 as "self-denial, renunciation," from Latin abnegationem (nominative abnegatio) "refusal, denial," noun of action from past-participle stem of abnegare "to refuse, deny," from ab "off, away from" (see ab-) + negare "to deny," from PIE root *ne- "not."