Where does “mildewe” come from?

mildewe (Middle English) comes from Old English meledeaw, from Proto-Germanic milidawwaz, from Proto-Germanic dawwaz, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

Ancestry of “mildewe”, step by step

mildewe traces back through two separate lines of ancestry.

via Old English meledeaw

StepLanguageWordMeaning
1Old Englishmeledeawhoneydew, nectar
2Proto-Germanicmilidawwazmildew
3Proto-Germanicdawwazmoisture; dew
4Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via Old English mildēaw

StepLanguageWordMeaning
1Old Englishmildēawhoneydew, nectar
2Proto-West Germanic*milidauwmildew
Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Germanic dawwazEvery word from Proto-Germanic milidawwaz