Simple past tense and past participle of scotch.(verb)
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Use "scotched" in a sentence
"Scotch is just a corruption of the word scotched, meaning processed."
"Yet, some traders seemed to ignore the reassurances, perhaps recalling scotched deals for other Wall Street banks from overseas interests."
"I suppose everyone has heard that the attempt to re-run the advertisements with the slogan "go to work on an egg" has been "scotched" (boiled or scrambled, even) by the UK's broadcast advertising clearance centre?"