This bold surmise, however, she soon learnt comprehended but half the fact.
Catherine sometimes started at the boldness of her own surmises, and sometimes hoped or feared that she had gone too far; but they were supported by such appearances as made their dismissal impossible.
If I understand you rightly, you had formed a surmise of such horror as I have hardly words to—Dear Miss Morland, consider the dreadful nature of the suspicions you have entertained.
It was a bold surmise, for he was Isabella’s brother; and she had been assured by James that his manners would recommend him to all her sex; but in spite of this, the extreme weariness of his company, which crept over her before they had been out an hour, and which continued unceasingly to increase till they stopped in Pulteney Street again, induced her, in some small degree, to resist such high authority, and to distrust his powers of giving universal pleasure.
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.