Block and Unplug

Block

Block verb - To prevent passage through by filling with something.
Usage example: one of the patient's arteries was so blocked with fatty deposits that blood flow had been reduced to a trickle

Unplug is an antonym for block.

Unplug

Unplug verb - To make passage through (something) possible by removing obstructions.
Usage example: the chimney should work just fine once it is unplugged and cleaned out

Block is an antonym for unplug.
Cite this Source
Unplug and Block. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/block/unplug
Block & Unplug. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/block/unplug>.
Unplug or Block. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/block/unplug.
Google Ngram Viewer shows how "block" and "unplug" have occurred on timeline