believe of

believe (something) of (someone)

To accept that a statement about someone is true. I can't believe these lies of Cheryl—I have always known her to be a very reputable businesswoman.
See also: believe, of

believe something of someone

to accept a statement about someone as truth. What a terrible thing for Jill to do. I can't believe it of her. I can believe anything of Max. He's such a conniving person.
See also: believe, of