not likely
US /nɑt ˈlaɪkli/
UK /nɑt ˈlaɪkli/

1.
non probabile, improbabile
used to say that something is certainly not true or will certainly not happen
:
•
“Will he apologize?” “Not likely!”
“Si scuserà?” “Non probabile!”
•
“Do you think they’ll win?” “Not likely, they’re playing against the champions.”
“Pensi che vinceranno?” “Non probabile, stanno giocando contro i campioni.”