That which is supposed; supposition; opinion.(noun)
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Use "supposal" in a sentence
"The story of Ivan and Dimitri and Alexie stops for God knows how many pages while we listen to a "supposal" about Christ visiting Seville during the time of the Spanish Inquisition."
"Of course Senator Clinton was saying these things back when she was busy alienating people like me with her arrogant supposal of the crown, as though any challenge to her claim on the nomination was unthinkable."
"That they are obstinate and pertinacious is also a cheap supposal, taken up without the price of a proof."