adust

Abnormally dark or over-concentrated (associated with various states of discomfort or illness, specifically being too hot or dry).

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: […]

Hot and dry; thirsty or parched.

He was tired and adust with long riding; but he did not go home.

Burnt or having a scorched colour.