Noun

1.

abnegation – the denial and rejection of a doctrine or belief; “abnegation of the Holy Trinity”

denial – the act of refusing to comply (as with a request); “it resulted in a complete denial of his privileges”

2.

abnegation – renunciation of your own interests in favor of the interests of others

self-abnegation, self-renunciation, self-denial, denial

forgoing, forswearing, renunciation – the act of renouncing; sacrificing or giving up or surrendering (a possession or right or title or privilege etc.)

self-sacrifice, selflessness – acting with less concern for yourself than for the success of the joint activity