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The meaning of CLEAN is free from dirt or pollution. How to use clean in a sentence.

Make sure your hands are clean before you have your dinner. Hospitals need to be kept spotlessly (= extremely) clean.

Dec 29, 2025 · clean (comparative cleaner, superlative cleanest) Free of dirt, filth, or impurities (extraneous matter); not dirty, filthy, or soiled. quotations

to empty in order to straighten or clean: [~ + out + object] I had to clean out my desk to find what I was looking for. [~ + object + out] I cleaned it out before dinner.

Cleanliness is both the state of being clean and free from germs, dirt, trash, or waste, and the habit of achieving and maintaining that state. Cleanliness is often achieved through cleaning. …

CLEAN definition: free from dirt; unsoiled; unstained. See examples of clean used in a sentence.

clean adjective (NO CRIME) showing that you have not done anything illegal: a clean driving licence

Synonyms for CLEAN: spotless, immaculate, pristine, stainless, spick-and-span, squeaky-clean, shiny, unsullied; Antonyms of CLEAN: dirty, unclean, filthy, stained, soiled, foul, uncleaned, …

I spent the morning cleaning the house. (Definition of clean from the Webster's Essential Mini Dictionary © Cambridge University Press)