It was easy to make my further arrangements; for I was troubled with no inquiries — no surmises.
Mrs. Fairfax surmised that he was gone to make arrangements for his wedding, as he had talked of purchasing a new carriage: she said the idea of his marrying Miss Ingram still seemed strange to her; but from what everybody said, and from what she had herself seen, she could no longer doubt that the event would shortly take place.
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.