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

1.
peu probable, pas probable
used to say that something is certainly not true or will certainly not happen
:
•
“Will he apologize?” “Not likely!”
«Va-t-il s’excuser ?» «Peu probable !»
•
“Do you think they’ll win?” “Not likely, they’re playing against the champions.”
«Penses-tu qu’ils vont gagner ?» «Peu probable, ils jouent contre les champions.»