| corrupt(verb, adjective, dull, hurt, harm) |
| debase(verb, hurt, harm, spoil, dirty) |
| discolor(verb, dull, hurt, harm, spoil) |
| disgusting(adjective, unclean) |
| disheveled(adjective, nasty, dirty, foul, sloppy) |
| doubtful(uncertain, vague, unclear, indistinct, indistinguishable) |
| dry |
| dungy(adjective, nasty, foul, sloppy, filthy) |
| dusky(adjective, dull, soft, obscure, flat) |
| faded(adjective, dull, soft, obscure, flat) |
| filmy |
| fuliginous |
| fuzz(verb, cover, confuse, hide, conceal) |
| gray(verb, adjective, dull, cover, confuse) |
| harm(verb, dull, hurt, dirty, corrupt) |
| hurt(verb, dull, dirty, corrupt, stain) |
| icky(adjective, nasty, foul, sloppy, filthy) |
| ill-defined(adjective, unclear, indistinct, indistinguishable) |
| incomprehensible(adjective, obscure, heavy, puzzling, esoteric) |
| indefinite(adjective, obscure, gloomy, uncertain, vague) |