imparable means “irrefutable” | MotiTan French Dictionary

More examples

Je trouve ton argument imparable.

I find your argument irrefutable.

A decisive proof that blocks every possible counterargument.

évident: Clear enough to be understood at a glance, without room for doubt.
sûr: Reliable and worthy of confidence, with no reason for doubt.

Qui empêche toute réfutation; qui ne laisse aucune possibilité de réplique.

French imparable continues Latin imparabilis through French parer, 'to ward off or parry', with im- marking what cannot be parried.

The adjective has the same form for masculine and feminine nouns, as in un argument imparable and une preuve imparable.