dirty your hands

dirty | American Dictionary

dirty
adjective[ -er/-est only ]
us/ˈdɜr·t̬i/

dirtyadjective[-er/-est only] (NOT CLEAN)

having esp. dirt on the surface of something:
He left his dirty towels on the bathroom floor.

dirtyadjective[-er/-est only] (UNFAIR)

unfair or dishonest:
That was a dirty trick – telling me you were out of town when you were right here all the time!
Dirty is also used to emphasize how strongly you feel that something is wrong or bad:
That’s a dirty lie!
dirty
verb[ T ]
us/ˈdɜr·t̬i/

dirtyverb[T] (GET DIRT ON)

to allow something to get dirt on it:
Don’t sit on the ground – you’ll dirty your new suit.

dirty | Business English

dirty
adjective
uk /ˈdɜːti/us
unfair or dishonest:
The rival company's dirty tricks campaign had cost it many millions of pounds.
a dirty campaign/business
dirty dealings/politics/tactics
ENVIRONMENT
containing dangerous substances that may be harmful to the environment:
dirty air
dirty coal plants
 do sb's dirty work
to do something unpleasant or difficult for someone because they do not want to do it themselves:
The building societies have done the chancellor's dirty work for him, by cutting the cost of a mortgage in anticipation of a base rate cut.
 quick and dirty
produced quickly and without spending much money:
Developers make quick and dirty versions of the final product so that the client can interact with it and provide feedback.