stubbornness
US /ˈstʌb.ɚn.nəs/
UK /ˈstʌb.ɚn.nəs/

1.
testardaggine, ostinazione
the quality or state of being unchangeably fixed in opinion or purpose
:
•
His stubbornness prevented him from admitting his mistake.
La sua testardaggine gli impedì di ammettere il suo errore.
•
Despite the evidence, her stubbornness kept her from changing her mind.
Nonostante le prove, la sua testardaggine le impedì di cambiare idea.