self·less 
/ˈsɛlfləs/ adjective
/ˈsɛlfləs/ adjective [more selfless; most selfless] : having or showing great concern for other people and little or no concern for yourself
▪ a selfless act ▪ selfless dedication/devotion/love
▪ a selfless act ▪ selfless dedication/devotion/love
— self·less·ly adverb
▪ He selflessly volunteered to help.
▪ He selflessly volunteered to help.
— self·less·ness noun [noncount]
