suspect

He fled hastily to the remotest corner of the horse pasture lest Marilla should suspect what he had been up to.

Allan says we should never suspect anyone of not telling us the truth unless we have proof that they’re not.

And at least neither Gilbert nor anybody else, not even Diana, should ever suspect how sorry she was and how much she wished she hadn’t been so proud and horrid!

Darcy so bad as this--though I have never liked him, I had not thought so very ill of him--I had supposed him to be despising his fellow-creatures in general, but did not suspect him of descending to such malicious revenge, such injustice, such inhumanity as this!”