How To Clean Aquarium Filters Without Killing Bacteria

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, 2025clean (comparative cleaner, superlative cleanest) free of dirt, filth, or impurities (extraneous matter); Clean meaning, definition, what is clean:

Without any dirt, marks etc: See examples of clean used in a sentence. 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. Spotless, immaculate, pristine, stainless, spick-and-span, squeaky-clean, shiny, unsullied;

Dirty, unclean, filthy, stained, soiled, foul, uncleaned, grubby Clean adjective (no crime) showing that you have not done anything illegal: Discover the best cleaning products and tools to keep your home spotless.

Our top picks will make cleaning easier.