What is another word for filter?

Need synonyms for filter? Here's a list of words from our thesaurus that you can use instead.

To remove usually visible impurities from
“If you are trying to stop contaminated air being breathed in, you not only have to filter the air, but ensure a good seal between the respirator and the face.”
Move slowly in a specified direction
“At least some of the money funnelled into Scottish Enterprise by the politicians actually seems to filter down to the people at the bottom.”
To sort, sift, or isolate
A porous device for removing impurities or solid particles from a liquid or gas passed through it
“The ground is an excellent filter for removing bacterial and other contamination.”
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