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

2 senses of selflessness

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")

Sense 2
selflessness, self-sacrifice -- (acting with less concern for yourself than for the success of the joint activity)
       => cooperation -- (joint operation or action; "their cooperation with us was essential for the success of our mission")