Free and Stop up

Free

Free verb - To set free (as from slavery or confinement).

Stop up is an antonym for free.

Nearby Words: freely, freed

Stop up

Stop up verb - To prevent passage through by filling with something.
Usage example: clear the leaves out of the rain gutters so they don't stop up the downspouts again

Free is an antonym for stop up in topics: block, obstruct.
Cite this Source
Stop up and Free. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/free/stop_up
Free & Stop up. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/free/stop_up>.
Stop up or Free. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/free/stop_up.
Google Ngram Viewer shows how "free" and "stop up" have occurred on timeline