not put it past someone
US /nɑt pʊt ɪt pæst ˈsʌmˌwʌn/
UK /nɑt pʊt ɪt pæst ˈsʌmˌwʌn/

1.
es jemandem zutrauen, nicht ausschließen
to believe that someone is capable of doing something bad or surprising, even if it is unexpected
:
•
I wouldn't put it past him to lie to get what he wants.
Ich würde es ihm zutrauen, zu lügen, um zu bekommen, was er will.
•
She's so competitive, I wouldn't put it past her to sabotage her opponent.
Sie ist so ehrgeizig, ich würde es ihr zutrauen, ihren Gegner zu sabotieren.