Antonyms of noun altruism

1 sense of altruism

Sense 1
altruism, selflessness -- (the quality of unselfish concern for the welfare of others)
       Antonym of egoism (Sense 2)
      => egoism, egocentrism, self-interest, self-concern, self-centeredness -- (concern for your own interests and welfare)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun altruism

1 sense of altruism

Sense 1
altruism, selflessness -- (the quality of unselfish concern for the welfare of others)
       => unselfishness -- (the quality of not putting yourself first but being willing to give your time or money or effort etc. for others; "rural people show more devotion and unselfishness than do their urban cousins")