Used as a standalone exclamation conveying strong negation or disbelief.
certainement pasExpression de refus catégorique. "Did you think I was serious?"—"Hardly!"
« Tu croyais que j'étais sérieux ? » — « Certainement pas ! »
Synonyms
No way!
Not likely!
Not a chance!
I doubt it!
As if!
By no means!
Don't bet on it!