Where does “fen” come from?

Fen derives from English fan, which comes from English fanatic, ultimately tracing through Latin vannus, Latin fanum, Latin -icus, Proto-Indo-European -kos, Proto-Indo-European dʰeh₁-, and Proto-Indo-European -tós.

fen (English): A type of wetland fed by ground water and runoff,...

Definitions

  1. A type of wetland fed by ground water and runoff,...

Ancestry of “fen”, step by step

fen traces back through 3 separate lines of ancestry.

via Middle English fen

StepLanguageWordMeaning
1Middle Englishfenfen, bog, swamp; dirt, muddiness; dung, feces
2Old Englishfennmud; fen, marsh
3Old Englishtūnenclosure, yard; place; dwelling
4Proto-West Germanictūnfence
5Proto-Germanictūnąfence; enclosure
6Gaulishdunumfort; hill, hillfort
7Proto-Celticdūnomstronghold, rampart
8Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via English fennec

StepLanguageWordMeaning
1EnglishfennecA small fox of the species "Vulpes zerda", found...
2Frenchfennecfennec
3Arabicفَنَكfennec fox

via Chinese

StepLanguageWordMeaning
1Chinesefen; to divide; to split

Words derived from “fen

Every word from Proto-Indo-European dʰewh₂-
fen — Etymology, Origin & Word History | Etymology Explorer