unstop

From Middle English unstoppen, equivalent to un- +‎ stop. Cognate with Dutch ontstoppen, German entstopfen.

unstop (third-person singular simple present unstops, present participle unstopping, simple past and past participle unstopped)

1. To remove a stoppage; to clear a blockage.

   I was able to unstop the clogged toilet by using a plunger.

2. To unplug or uncork a container.

   I unstopped a bottle of wine to celebrate.

3. To draw out the stops of (an organ).

• Pontus, puntos, put-ons, puts on, ton-ups, unpots