sooty

Etymology

From Middle English sooty, soty, equivalent to soot + -y. Probably influenced by similar Middle English suti (“dirty, filthy”), derived from the same root as Old English besūtian (“to befoul”).

adj

1. Of, relating to, or producing soot.
2. Soiled with soot
3. Of the color of soot.
4. (obsolete, literary) Dark-skinned; black.
   While thus reduced, his few surviving senses were at once called into acute activity by the appearance of a sooty little negro, who placed within his grasp a misshapen fold of dirty paper, […] 1834, William Gilmore Simms, Guy Rivers: A tale of Georgia
   And, though I've laughed at your expense, / O sister of the sooty hue, / No man who has a heart and sense / Would do one deed to injure you. 1877, Henry Kendall, “Ode to a Black Gin”, in The Australian Town and Country Journal, page 24

verb

1. To blacken or make dirty with soot.