define unselfish
uk â /ÊnËsel.fÉªÊ/ us â /ÊnËsel.fÉªÊ/. âº An unselfish person thinks about what is good for other people, not just about their own advantage. Thesaurus: synonyms and related words. Virtue and moral good. altruism. angel. angelic. be as pure as the driven snow idiom. be on the side of the angels idiom.