Unselfishness is a synonym of Kindness.  Some of the synonyms for Unselfishness are: altruism, beneficence, benevolence, charity, helpfulness, magnanimity, munificence, openhandedness, philanthropy.

I particularly like the expression of "openhandedness" - signifying whatever I have is yours, that I can give freely, that I can also let go easily.  That is true unselfishness, to me.

What does unselfishness mean to you?