Where does “interus” come from?

interus (Latin) comes from Proto-Indo-European h₁énteros, from Proto-Indo-European -teros — Contrastive or oppositional adjectival suffix.

Ancestry of “interus”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanh₁énterosinside, within
2Proto-Indo-European-terosContrastive or oppositional adjectival suffix

Words derived from “interus

Every word from Proto-Indo-European -terosEvery word from Proto-Indo-European h₁énteros