Where does “moistest” come from?

moistest (English) comes from English moist, from Middle English moist, from Old French moiste, from Vulgar Latin mucidus, from Latin mucidus, from Latin mūceō, from Latin mūcus, from Proto-Italic moukos — slimy, slippery; slip, slime.

Ancestry of “moistest”, step by step

StepLanguageWordMeaning
1EnglishmoistSlightly wet; characterised by the presence of...
2Middle Englishmoist
3Old Frenchmoistedamp; wet; clammy; moist
4Vulgar Latinmucidusmoldy, musty; sniveling
5Latinmucidusmoldy, musty; sniveling
6Latinmūceōto be mouldy or musty
7Latinmūcusmucus
8Proto-Italicmoukos
9Proto-Indo-Europeanmew-k-slimy, slippery; slip, slime
Every word from Proto-Indo-European mew-k-