Simple past tense and past participle of presuppose.(verb)
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Use "presupposed" in a sentence
"Are you honestly telling me that every and all materialist theories about the brain presupposed that problems like OCD could be overcome by mental focus and dialogue?"
"For the syllogism is always contrary to the fact, e.g. if a thing is good, it is proved that it is not good, if an animal, that it is not an animal because the syllogism springs out of a contradiction and the terms presupposed are either identical or related as whole and part."
"The noise of an engine getting up steam, the rattle of cabs and porters 'barrows, the tread and voices of a multitude of people made fitting accompaniment to a dialogue which in every word presupposed the corruptions and miseries of a centre of modern life."