The shops show the same standardized, nationally advertised wares; the newspapers of sections three thousand miles apart have the same "syndicated features"; the boy in Arkansas displays just such a flamboyant ready-made suit as is found on just such a boy in Delaware, both of them iterate the same slang phrases from the same sporting-pages, and if one of them is in college and the other is a barber, no one may surmise which is which.
There are no more uses of "surmise" in the book.
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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.