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  1. Dictionary
    clean
    /kliːn/

    adjective

    adverb

    • 1. so as to be free from dirt, marks, or unwanted matter: "the room had been washed clean"
    • 2. used to emphasize the completeness of a reported action, condition, or experience: informal "he was knocked clean off his feet"

    verb

    noun

    • 1. an act of cleaning something: "he gave the room a clean"

    More definitions, origin and scrabble points

  2. CLEAN definition: 1. free from any dirty marks, pollution, bacteria, etc.: 2. honest or fair, or showing that you…. Learn more.

  3. 1. 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. 2. a. : unadulterated, pure. the clean thrill of one's first flight. b. of a precious stone : having no interior flaws visible. c.

  4. Clear refers particularly to freedom from flaw or blemish: a clear pane of glass. Pure refers especially to freedom from mixture or stain: a pure metal; not diluted but pure and full strength. Clean, cleanse refer to removing dirt or impurities.

  5. clean, cleanse refer to removing dirt or impurities. to clean is the general word with no implication of method or means: to clean windows, a kitchen, streets. cleanse is esp. used of thorough cleaning by chemical or other technical process; figuratively it applies to moral or spiritual purification: to cleanse parts of machinery; to cleanse ...

  6. The meaning of clean usually refers to removing something unwanted: you clean your hands by washing them, then you can clean some grapes. This word has many meanings related to being pure or empty. You clean a chicken by plucking its feathers, or get cleaned out when you lose all your money at poker.

  7. Define clean. clean synonyms, clean pronunciation, clean translation, English dictionary definition of clean. adj. clean·er , clean·est 1. Free from dirt, stain, or impurities; unsoiled: a clean kitchen floor; clean clothes. 2. a. Free from foreign matter or...

  8. free from harmful or unpleasant substances. clean water/air. Thousands were left without food or clean drinking water. clean energy. We all want a cleaner environment but who is going to pay for it? cleaner cars (= not producing so many harmful substances) Electric buses are a clean, environmentally friendly way to travel. Extra Examples.