put it past
Verb
Meaning
put it past (third-person singular simple present puts it past, present participle putting it past, simple past and past participle put it past)
(idiomatic, chiefly in the negative) To consider it beyond what someone is capable of doing.
I wouldn't put it past him to spread malicious gossip about you.
Examples
I wouldn't put it past God to arrange a virgin birth if He wanted, but I very much doubt if He would.
I felt my mother about the place. I don't think she haunts me, but I wouldn't put it past her.
If the government ever imposes a tax on books - and I wouldn't put it past them - I'm in dead trouble.