I wouldn't put it past

I wouldn't put it past somebody

something that you say when you think that it is possible that someone might do something wrong or unpleasant 'Do you really think he'd go off with another woman?' 'I wouldn't put it past him.' (often + to do sth) I wouldn't put it past Lorna to deny all knowledge of this plan.
See also: past, put
References in classic literature ?
Why, I wouldn't put it past them to make a god of him
If you touch the receiver they will know at the exchange that the house is not empty, and I wouldn't put it past the colonel to have told them exactly how long he was going to be away.
I wouldn't put it past them to have invented a few hundred Academy Award voters, as well.