Simple past tense and past participle of quash.(verb)
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Use "quashed" in a sentence
"Ontario's attorney general is conceding his conviction for criminal negligence in connection with Gaurov's death should be quashed, which is expected to happen Jan. 17 when the case comes before the Ontario Court of Appeal."
"While coaches of no fewer than half a dozen clubs have expressed an interest in the representative forward, club bosses and members have managed to have the idea quashed at the final hurdle."
"Parlementeer, accused him not only of poltroonery and tyranny, but even of concussion (official plunder of money); which accusations it was easier to get 'quashed' by backstairs Influences than to get answered: neither could the thoughts, or even the tongues, of men be tied."