Origin of suppositious
Examples from the Web for suppositious
He is bitten by suppositious dogs cunningly simulated by stage carpenters, who remark "bow wow" from behind the scenes.
A suppositious example may serve in explanation; only a fact will serve as proof.
"That's true patriotism," the officers agreed, but were puzzled by the grinning of the suppositious patriot.New Zealanders at Gallipoli|Major Fred Waite
The example may be either actual or suppositious, but it must illustrate clearly and accurately.
I hope you didn't do more'n make a suppositious case and find out what her sentiments was.