adjective
cleaner; -est
free from dirt, marks, etc. :not dirty
tending to keep clean
free from pollution or other dangerous substances
not causing pollution
not yet used
b of a document :not having any mistakes
not infected
pleasingly simple
having edges that are straight and smooth
completely and quickly done
sports :done in a skillful and impressive way without mistakes or awkwardness
not showing evidence of any broken rules or laws
not connected with or involving anything illegal or morally wrong
not referring to anything sexual or offensive
not used before a noun :no longer using drugs :not addicted to drugs
not used before a noun informal :not carrying any weapons, drugs, etc.
clean as a whistle
clean slate
also Brit clean sheet
a person's record (as from a school or a job) that shows no evidence of any problems, broken rules, etc. :a clean record
clean sheet Brit :a game in which the opposing team is prevented from scoring
clean sweep
a victory in which one side or team wins every game, contest, etc.
a complete change in something
come clean
informal :to tell the truth about what happened :to stop hiding the truth
give (someone or something) a clean bill of health
keep your nose clean
make a clean breast of
wipe the slate clean
verb
cleans; cleaned; cleaning
to make (something) clean :to remove dirt, marks, etc., from (something) [+ obj]
[no obj] :to become clean
[+ obj] :to make (something, such as a room) neat and orderly
[+ obj] :to remove the organs from the inside of (an animal) before cooking
clean house
clean out
[phrasal verb]
clean (something) out or clean out (something) :to remove unwanted things from (a room, closet, etc.)
clean (someone or something) out or clean out (someone or something) informal :to steal or take everything from (someone or something)
clean (someone) out or clean out (someone) informal :to use up all or most of someone's money
clean up
[phrasal verb]
clean (something) up or clean up (something)
to remove (dirt, spilled substances, etc.)
b or clean up :to make (a room or space) clean and orderly
To clean up after someone is to make a place clean after someone has made it dirty or messy.
to remove pollution from (something)
clean up or clean (yourself) up :to make yourself clean :to wash your face and hands
clean (something) up or clean up (something)
to remove whatever is illegal or immoral from (something)
to make (something) clearer or more acceptable
clean (something) up or clean up (something) informal :to eat all of (something)
informal :to make a large amount of money
clean up your act informal :to behave in a way that is more acceptable
clean your plate
to eat all the food on your plate
usage seecleanse</USAGER
adverb
informal :all the way :completely or entirely
noun
[singular] informal :an act of removing dirt from something