Definition of "dirty" in English

adjective

Unclean; covered with or containing unpleasant substances such as dirt or grime.
- Despite a walk in the rain, my shoes weren't too dirty.
That makes one unclean; corrupting, infecting.
- Don't put that in your mouth, dear. It's dirty.
Morally unclean; obscene or indecent, especially sexually.
- At the reception, Uncle Nick got drunk and told dirty jokes to the bridesmaids.
Dishonorable; violating accepted standards or rules.
- He might have scored, but it was a dirty trick that won him the penalty.
Corrupt, illegal, or improper.
- I won't accept your dirty money!
Out of tune.
- You need to tune that guitar: the G string sounds dirty.
Of color, discolored by impurities.
- The old flag was a dirty white.
(computing) Containing data needing to be written back to memory or disk.
- Occasionally it reads the sector into a dirty buffer, which means it needs to sync the dirty buffer first.
(slang) Carrying illegal drugs among one's possessions or inside of one's bloodstream.
- None of y'all get into my car if you're dirty.
(informal) Used as an intensifier, especially in conjunction with "great".
- He lives in a dirty great mansion.
Sleety; gusty; stormy.
- dirty weather
(slang) Of an alcoholic beverage, especially a cocktail or mixed drink: served with the juice of olives.
- dirty martini
Of food, indulgent in an unhealthy way.
Of food, covered in an array of indulgent toppings.
Spreading harmful radiation over a wide area.
- a dirty explosion
- a dirty bomb
(aviation) Having the undercarriage or flaps in the down position.
Of an audio recording: containing unwanted noise.
(cellular automata) Producing much ash.

adverb

In a dirty manner.
- to play dirty

verb

(transitive) To make (something) dirty.
(transitive) To stain or tarnish (somebody) with dishonor.