DIRTY

I. adjective (dirtier; -est) Date: 14th century 1. not clean or pure , likely to befoul or defile with dirt , contaminated with infecting organisms , containing impurities , 2. morally unclean or corrupt: as, indecent , vulgar , dishonorable , base , unsportsmanlike , acquired by disreputable or illegal means ; ill-gotten , disagreeable, distasteful, or objectionable but usually necessary (as in achieving a desired result) , 3. abominable , hateful , highly regrettable , likely to cause disgrace or scandal , foggy , stormy , 5. not clear and bright ; dullish , characterized by a husky, rasping, or raw tonal quality , conveying ill-natured resentment , having considerable fallout , dirtily adverb dirtiness noun Synonyms: see: ~ II. adverb (dirtier; -est) Date: circa 1931 in a ~ manner: as, deceptively, underhandedly , indecently , III. verb (dirtied; ~ing) Date: 1591 transitive verb to make ~, 2. to stain with dishonor ; sully , to debase by distorting the real nature of, intransitive verb to become soiled