Where does “interest” come from?

interest (Old French) comes from French intérêt, from Medieval Latin interesse, from Latin interesse, from Latin esse, from Ancient Greek οὐσία, from Ancient Greek εἰμί, from Proto-Hellenic ehmi, from Proto-Indo-European h₁ésmi — to be.

Ancestry of “interest”, step by step

StepLanguageWordMeaning
1Frenchintérêtinterest; point
2Medieval Latininteressepresent active infinitive of intersum; to...
3Latininteressepresent active infinitive of intersum; to...
4Latinessepresent infinitive of sum; state, condition;...
5Ancient Greekοὐσίαthat which is one's own, one's substance,...
6Ancient GreekεἰμίTo be, exist; live; To be; it is possible
7Proto-Hellenicehmito be
8Proto-Indo-Europeanh₁ésmifirst-person singular present indicative of...
9Proto-Indo-Europeanh₁ēs-to be

Words derived from “interest

Every word from Proto-Indo-European h₁ēs-Every word from Proto-Indo-European h₁ésmiEvery word from Proto-Hellenic ehmi