QUASH

I. transitive verb Etymology: Middle English ~en to smash, from Anglo-French quasser, casser, from Latin quassare to shake violently, shatter, frequentative of quatere to shake Date: 13th century to suppress or extinguish summarily and completely , II. transitive verb Etymology: Middle English quassen, from Anglo-French casser, quasser to annul, from Late Latin cassare, from Latin cassus void Date: 14th century to nullify especially by judicial action