dirty Play adjectiveCovered or marked with an unclean substance.adverbUsed for emphasis.verbMake dirty. SYNONYMS befouledbegrimedbesmirchedboggingcloudycontaminatedcruddydefileddustyfeculentfilthyfoulgreasygrimygrottygrubbygungyickyimpureinsanitarymankymuckymuddypollutedsmearedsmearysmudgedsoiledsootyspottedstainedsulliedtarnisheduncleanunhygienicunsanitaryunwashedyucky