The triumphant sense of security, of deliverance from overwhelming danger, that was what filled his whole soul that moment without thought for the future, without analysis, without suppositions or surmises, without doubts and without questioning.
He knocked some time before he was admitted, and his visit at first caused great perturbation; but Svidrigailov could be very fascinating when he liked, so that the first, and indeed very intelligent surmise of the sensible parents that Svidrigailov had probably had so much to drink that he did not know what he was doing vanished immediately.
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.