self-renunciation(n = noun.act) abnegation, denial, self-abnegation, self-denial - renunciation of your own interests in favor of the interests of others;
is a kind of forgoing, forswearing, renunciation, self-sacrifice, selflessness

   The act of renouncing, or setting aside, one's own wishes, claims, etc.; self-sacrifice. [1913 Webster]

self-renunciation, n.
1 = SELF-SACRIFICE.
2 unselfishness.