would leave, would let, would allow
Tom non lascerebbe mai Mary.
Tom would never leave Mary.
Mi ha detto che non mi lascerebbe mai.
He told me he would never leave me.
Tom non ci lascerebbe aiutare Mary.
Tom wouldn't let us help Mary.
Quale poliziotto lascerebbe che qualcuno così vada a casa?
What cop would let someone like that go home?
— Decision to Leave (2022)
Tom non mi lascerebbe guidare.
Tom wouldn't let me drive.
Sami non lascerebbe mai sua moglie.
Sami would never leave his wife.
Tom non lascerebbe la casa.
Tom wouldn't leave the house.