adust

1. (medicine, historical, usually postpositive, of a bodily humour) Abnormally dark or over-concentrated (associated with various states of discomfort or illness, specifically being too hot or dry).Examples: "From melancholy aduſt ariſes one kind [of humour]; from Choler another, which is moſt brutiſh: another from Flegme, which is dull; and the laſt from Blood, which is beſt."; "[S]o in fevers and hot diſtempers from choler aduſt is cauſed a blackneſſe in our tongues, teeth and excretions: […]"historicalpostpositionalusually

2. (by extension) Hot and dry; thirsty or parched.Examples: "He was tired and adust with long riding; but he did not go home."broadly

3. (archaic) Burnt or having a scorched colour.archaic