Filter and Foul

Filter

Filter verb - To remove usually visible impurities from.
Usage example: after frying the chicken, we filtered the oil and kept it in the refrigerator to use again

Foul is an antonym for filter.

Nearby Words: filtered, filtering, filtration, filterable

Foul

Foul verb - To make unfit for use by the addition of something harmful or undesirable.
Usage example: industrial pollution fouling the water supply

Filter is an antonym for foul.

Nearby Words: foulness, fouled, foully, fouling
Cite this Source
Foul and Filter. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/filter/foul
Filter & Foul. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/filter/foul>.
Foul or Filter. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/filter/foul.
Google Ngram Viewer shows how "filter" and "foul" have occurred on timeline