From Longman Dictionary of Contemporary EnglishI wouldn’t put it past somebody (to do something)I wouldn’t put it past somebody (to do something)spokenTYPICAL used to say that you would not be surprised if someone did something bad or unusual because it is typical of them to do that type of thing I wouldn’t put it past Colin to cheat. → past
Examples from the Corpus
I wouldn’t put it past somebody (to do something)• I wouldn't put it past Colin to lie to his wife.I wouldn’t put it past somebody (to do something)I wouldn’t put it past somebody (to do something)spoken used to say that you think someone could easily do something wrong or illegal I wouldn’t put it past him to use force. → put 