Where does “deriven” come from?

deriven (Middle English) comes from Old French deriver, from Latin dērīvō, from Latin dē-, from Latin dē, from Latin post, from Latin poste, from Proto-Italic posti, from Proto-Indo-European pósti — afterwards, post; by, at.

Ancestry of “deriven”, step by step

StepLanguageWordMeaning
1Old Frenchderiver
2LatindērīvōTo draw or lead off
3Latindē-of; from
4Latinof; concerning; about
5Latinpostbehind; after, since, besides, except; behind,...
6Latinposteablative singular of postis
7Proto-Italicpostibehind, after
8Proto-Indo-Europeanpóstiafter
9Proto-Indo-Europeanpósafterwards, post; by, at

Words derived from “deriven

Every word from Proto-Indo-European pós