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.

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.