adust

From Middle French aduste, and its source, Latin adustus (“burnt, scorched”), past participle of adūrere.

• (UK) IPA^(key): /əˈdʌst/

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). [from 15th c.]
   • 1638, Democritus Junior [pseudonym; Robert Burton], “Of the Matter of Melancholy”, in The Anatomy of Melancholy. […], 5th edition, Oxford, Oxfordshire: Printed [by Robert Young, Miles Flesher, and Leonard Lichfield and William Turner] for Henry Cripps, →OCLC, partition 1, section 1, member 3, subsection [3], page 34:

     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.

   • 1650, Thomas Browne, “A Digression Concerning Blacknesse”, in Pseudodoxia Epidemica: […], 2nd edition, London: […] A[braham] Miller, for Edw[ard] Dod and Nath[aniel] Ekins, […], →OCLC, 6th book, page 283:

     [S]o in fevers and hot diſtempers from choler aduſt is cauſed a blackneſſe in our tongues, teeth and excretions: […]

2. (by extension) Hot and dry; thirsty or parched.
   • 1862 July – 1863 August, George Eliot [pseudonym; Mary Ann Evans], “At the Barber’s Shop”, in Romola. […], volume II, London: Smith, Elder and Co., […], published 1863, →OCLC, book III, page 307:

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

3. (archaic) Burnt or having a scorched colour. [from 15th c.]

• duats, ustad

Borrowed from Latin adustus (“burnt, scorched”), perfect passive participle of adūrō.

• IPA^(key): (Central, Balearic) [əˈðust]
• IPA^(key): (Valencian) [aˈðust]

adust (feminine adusta, masculine plural adusts or adustos, feminine plural adustes)

1. scorched, parched
2. (figurative) sullen, grim

• “adust” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.