Where does “musty” come from?

Musty comes from English must, from Proto-Germanic mōtaną, from Proto-Indo-European med-, meaning to change or alter in condition.

musty (English): Having a stale odor

Definitions

  1. Having a stale odor

Ancestry of “musty”, step by step

musty traces back through 3 separate lines of ancestry.

via English musth

StepLanguageWordMeaning
1EnglishmusthA time during which male elephants exhibit...
2Hindiमस्तdrunk, intoxicated; passionate, aroused;...
3Classical Persianمست
4Middle Persian𐭬𐭮𐭲drunk, bemused
5Proto-Indo-Iranianmatˢtásdrunk, intoxicated
6Proto-Indo-Europeanmeh₂d-to be wet, to become wet; to meet, approach,...

via Vulgar Latin mucidus

StepLanguageWordMeaning
1Vulgar Latinmucidusmoldy, musty; sniveling
2Latinmucidusmoldy, musty; sniveling
3Latinmūceōto be mouldy or musty
4Latinmūcusmucus
5Proto-Italicmoukos
6Proto-Indo-Europeanmew-k-slimy, slippery; slip, slime

via Latin mustum

StepLanguageWordMeaning
1Latinmustummust; unfermented or partially fermented grape...
2Latinmustusfresh, young; unfermented
3Proto-Indo-Europeanmūs-fly, stinging fly, gnat; moist, damp; swamp,...

Words derived from “musty

Every word from Proto-Indo-European meh₂d-Every word from Proto-Indo-Iranian matˢtásEvery word from Middle Persian 𐭬𐭮𐭲