Where does “upstream” come from?

Upstream derives from Middle English up-, combined with Old English strēam (flowing water), from Proto-Germanic straumaz, ultimately from Proto-Indo-European srowmos and the root ser- meaning to flow.

upstream (English): in a direction against the flow of a current or...

Definitions

  1. in a direction against the flow of a current or...

Ancestry of “upstream”, step by step

StepLanguageWordMeaning
1EnglishstreamA small river; a large creek; a body of moving...
2Middle EnglishstreemAlternative form of strem
3Middle EnglishstremA waterbody; a region of the world containing...
4Old Englishstrēamcurrent; stream
5Proto-West Germanicstraumstream
6Proto-Germanicstraumazstream, current, river
7Proto-Indo-Europeansrowmosriver
8Proto-Indo-Europeansrew-to flow, stream
9Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together

Words derived from “upstream

Every word from Proto-Indo-European ser-