unstop

Meanings

1. 1
   verb

   to clear a blockage from an opening, pipe, or passage

   A plumber was called to unstop the blocked drain.

2. 2
   verb

   to remove a stopper, plug, or cork from a container or opening

   She used a corkscrew to unstop the bottle.

From Middle English unstoppen, formed from the reversing prefix un- + stop. It can reverse either stopping as blockage or stop as the act of closing an opening with a plug.

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