self–in·ter·est 
/ˌsɛlfˈɪntrəst/ noun
/ˌsɛlfˈɪntrəst/ noun [noncount] 1 disapproving : concern only for getting what you want or need and not about what happens to other people
▪ They acted out of self-interest and fear. 2 : your own interest or advantage
▪ Our self-interest demands that we help them. [=it benefits us to help them]
▪ They acted out of self-interest and fear.
▪ Our self-interest demands that we help them. [=it benefits us to help them]
— self–in·ter·est·ed /ˌsɛlfˈɪntrəstəd/ adjective
▪ self-interested behavior
/ˌsɛlfˈɪntrəstəd/ adjective ▪ self-interested behavior
