Meaning of CLEAN in English

I. ˈklēn adjective

Etymology: Middle English clene, from Old English clǣne; akin to Old High German kleini delicate, dainty

Date: before 12th century


a. : free from dirt or pollution

changed to clean clothes

clean solar energy

b. : free from contamination or disease

a clean wound

c. : free or relatively free from radioactivity

a clean atomic explosion


a. : unadulterated , pure

the clean thrill of one's first flight

b. of a precious stone : having no interior flaws visible

c. : free from growth that hinders tillage

clean farmland


a. : free from moral corruption or sinister connections of any kind

a candidate with a clean record

also : free from violations

a clean driving record

b. : free from offensive treatment of sexual subjects and from the use of obscenity

a clean joke

c. : observing the rules : fair

a clean fight

4. : ceremonially or spiritually pure

and all who are clean may eat flesh — Leviticus 7:19 (Revised Standard Version)


a. : thorough , complete

a clean break with the past

b. : deftly executed : skillful

clean ballet technique

c. : hit beyond the reach of an opponent

a clean single to center


a. : relatively free from error or blemish : clear ; specifically : legible

clean copy

b. : unencumbered

clean bill of sale


a. : characterized by clarity and precision : trim

a clean prose style

architecture with clean almost austere lines

b. : even , smooth

a clean edge

a sharp blow causing a clean break

c. : free from impedances to smooth flow (as of water or air)

a clean airplane

a ship with a clean bottom


a. : empty

the ship returned with a clean hold

b. : free from drug addiction

has been clean for six months

c. slang : having no contraband (as weapons or drugs) in one's possession

9. : habitually neat

• clean·ness ˈklēn-nəs noun

II. adverb

Date: before 12th century


a. : so as to clean

a new broom sweeps clean

b. : in a clean manner

play the game clean

2. : all the way : completely

the bullet went clean through his arm

III. verb

Date: 15th century

transitive verb


a. : to make clean: as

(1) : to rid of dirt, impurities, or extraneous matter

(2) : to rid of corruption

vowing to clean up city hall

b. : remove , eradicate — usually used with up or off

clean up that mess


a. : strip , empty

a tree clean ed of fruit

b. : to remove the entrails from

clean fish

c. : to deprive of money or possessions — often used with out

they clean ed him out completely

intransitive verb

: to undergo or perform a process of cleaning

clean up before dinner

• clean·abil·i·ty ˌklē-nə-ˈbi-lə-tē noun

• clean·able ˈklē-nə-bəl adjective

- clean house

- clean one's clock

- clean up one's act

IV. noun

Date: circa 1889

: an act of cleaning dirt especially from the surface of something

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.