Origin of suppositious
First recorded in 1615–25; shortened form of supposititious
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for suppositious
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
I hope you didn't do more'n make a suppositious case and find out what her sentiments was.
The example may be either actual or suppositious, but it must illustrate clearly and accurately.
He is bitten by suppositious dogs cunningly simulated by stage carpenters, who remark "bow wow" from behind the scenes.
- deduced from supposition; hypothetical
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012