adjective, -er, -est, adverb, -er, -est, verb | 1. | free from dirt; unsoiled; unstained: She bathed and put on a clean dress. |
| 2. | free from foreign or extraneous matter: clean sand. |
| 3. | free from pollution; unadulterated; pure: clean air; clean water. |
| 4. | habitually free of dirt: Cats are considered clean animals. |
| 5. | characterized by a fresh, wholesome quality: the clean smell of pine. |
| 6. | free from all writing or marking: a clean sheet of paper. |
| 7. | having few or no corrections; easily readable: The publisher demanded clean proofs from the printer. |
| 8. | free from roughness or irregularity: He made a clean cut with a razor. |
| 9. | not ornate; gracefully spare; forceful and simple; trim; streamlined: a clean literary style; the clean lines of a ship. |
| 10. | complete; unqualified: a clean break with tradition. |
| 11. | morally pure; innocent; upright; honorable: to lead a clean life. |
| 12. | showing good sportsmanship; fair: a clean fighter. |
| 13. | inoffensive in language or content; without obscenity. |
| 14. | (of a document, record, etc.) bearing no marks of discreditable or unlawful conduct; listing no offenses: a clean driver's license. |
| 15. | Slang.
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| 16. | (of a nuclear weapon) producing little or no radioactive fallout. |
| 17. | not radioactive. |
| 18. | (of a document or financial instrument) free from qualifications or restrictions: a clean bill of lading. |
| 19. | free from defects or flaws: a clean diamond. |
| 20. | free from encumbrances or obstructions. |
| 21. | neatly or evenly made or proportioned; shapely; trim: a clean profile. |
| 22. | made without any unanticipated difficulty or interference: The bank robbers made a clean getaway. |
| 23. | Chiefly Biblical. having no physical or moral blemish or carrying no taboo so as to make impure according to the laws, esp. the dietary or ceremonial laws: a clean animal; clean persons. |
| 24. | dexterously performed; adroit: a clean serve in tennis. |
| 25. | (of a jump over an obstacle) made without touching the obstacle. |
| 26. | Slang. having no direct associations, business interests, etc., that could prejudice one's official acts or decisions: The new governor is clean because he's sold his construction business and doesn't owe political favors to anyone. |
| 27. | Slang. without money or funds. |
| 28. | (of wine) having a taste that is unusually refreshing and smooth. |
| 29. | Nautical. (of an anchorage, harbor, etc.) free of obstructions or hazards (opposed to foul ). |
| 30. | (of the legs of a horse) free from injury or blemish, as capped hocks, splints, or scars. |
| 31. | Foreign Exchange. (of currency floats) not influenced by exchange-rate manipulation (opposed to dirty ). |
| 32. | in a clean manner; cleanly: Nobody wants to box with him because he doesn't fight clean. |
| 33. | so as to be clean: This shirt will never wash clean. |
| 34. | Informal. wholly; completely; quite: The sharp carving knife sliced clean through the roast. In a year, he had gone clean through his inheritance. |
| 35. | to make clean: Clean those dirty shoes. |
| 36. | to remove or consume the contents of; empty; clear: She sat down to dinner ravenous and within five minutes had cleaned her plate. |
| 37. | to dry-clean. |
| 38. | to remove the entrails and other inedible parts from (poultry, fish, etc.); dress. |
| 39. | Slang. to take away or win all or almost all the money or possessions of (often fol. by out): The cards were marked and I got cleaned. |
| 40. | Metallurgy. to remove the seams from (a casting) by filing or grinding. |
| 41. | Philately. to delete intentionally the cancellation from (a postage or revenue stamp). |
| 42. | to perform or undergo a process of cleaning: This kind of fabric cleans easily. Detergents clean better than most soaps. |
| 43. | to get rid of dirt, soil, etc. (often fol. by up): to spend the morning cleaning. |
| 44. | clean out,
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| 45. | clean up,
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| 46. | clean full, Nautical.
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| 47. | clean house, to wipe out corruption, inefficiency, etc., as in an organization: It's time for the city government to clean house. |
| 48. | clean up one's act. act (def. 27). |
| 49. | come clean, Slang. to tell the truth, esp. to admit one's guilt. |

clean (klēn) adj. clean·er, clean·est
v. tr.
To undergo or perform an act of cleaning. Phrasal Verbs: clean out
clean out
Idiom(s): clean house Slang To eliminate or discard what is undesirable: The scandal forced the company to clean house. [Middle English clene, from Old English clǣne.] clean'a·ble adj., clean'ness n. Synonyms: These adjectives mean free from dirt: clean clothing; antiseptic surgical instruments; a cleanly pet; an immaculate tablecloth; a spotless kitchen. |
clean (so)
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clean up (on (sth))
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clean up
Also, clean out. Make clean or orderly, as in She cleaned up the cellar after the flood, or Dad said he cleaned out the garage. [First half of 1800s]
Also, wash up. Wash or tidy oneself, as in Do I have time to clean up before dinner?
Settle or dispose of, as in He cleaned up all the bills that had arrived during his vacation.
Bring to a certain standard of order or morality, as in This script won't do; we'll have to clean up the language. Applied to personal behavior, it also is put as clean up one's act, as in He'll have to clean up his act and obey the rules. [c. 1900]
Succeed, especially financially, as in We had fantastic luck at the races and really cleaned up. [Slang; first half of 1800s]
Also, clean up on. Defeat or vanquish, kill, as in We're cleaning up all the other teams, or With enough ammunition we could clean up on this pocket of snipers. [Slang; mid-1800s]