simple interest
noun /ˌsɪmpl ˈɪntrəst/, /ˌsɪmpl ˈɪntrest/
/ˌsɪmpl ˈɪntrəst/, /ˌsɪmpl ˈɪntrest/
[uncountable] (finance)- interest that is paid only on the original amount of money that you invested, and not on any interest that it has earned compare compound interest