self-interest /ˌsɛlfˈɪntrəst/ noun Learner's definition of SELF-INTEREST
[noncount]
1
disapproving : concern only for getting what you want or need and not about what happens to other people自私自利;利己之心 2
: your own interest or advantage个人利益;个人好处 — self-interested
/ˌsɛlfˈɪntrəstəd/ adjective