grimy

形容词 grimy:

1. thickly covered with ingrained dirt or soot
   同义词：begrimed, dingy, grubby, grungy, raunchy

grim.y

adj.（形容词）
grim.i.er,grim.i.est
Covered or smudged with grime.See Synonyms at dirty
满是污垢的，肮脏的：被污垢覆盖的或弄脏的参见 dirty

【引伸】
grim.ily
adv.（副词）
grim.iness
n.（名词）