dunness|ˈdʌnnɛs| [f. dun a. + -ness.] The quality of being dun; duskiness, dinginess. 1610Markham Masterp. i. lxvi. 140 When Baynesse turnes to dunnesse, blackes to duskishnes.1616Surfl. & Markh.Country Farme 205 Spots or dunnesse of the skinne.1848Lytton Harold v. vii, The dunness of the clouds.