scotch

To scotch something is to put an end to it or render it harmless—typically a rumor, plan, or threat: Let me scotch that idea before it spreads.

The word suggests decisive suppression rather than gradual elimination.

A scotch is also a wedge or block placed against a wheel to prevent rolling.

As an adjective, scotch means frugal or sparing, though this sense is now rare. (Capitalized Scotch refers to whisky or things Scottish.)