soiled

adjective

Made dirty or stained, often with something unpleasant or waste material.

"The baby's nappy was soiled and needed changing."

Thesaurus

Synonyms: grimy, travel-stained, sooty, snot-nosed, unwashed, sordid, squalid, unswept, muddy, dirty-faced, befouled, buggy

Antonyms: clean