Among other ingenious surmises, the question was then raised, whether Mr. Giles had really hit anybody; and upon examination of the fellow pistol to that which he had fired, it turned out to have no more destructive loading than gunpowder and brown paper: a discovery which made a considerable impression on everybody but the doctor, who had drawn the ball about ten minutes before.
There are no more uses of "surmise" in the book.
Show samples from other sources
He has surmised that this is not a friendly visit.
Colleen Hoover -- Slammed
After texting his mom, he started the truck and peeled out of the parking lot, making it back to the ranch a little after four a.m. Seeing the lights on in the main house, he surmised that his mom had either risen early or. more likely, hadn’t gone to bed.