on l'aurait

one would have …

→ on
phrase Rare #37,185
one would have … “On” can mean “one,” “we,” or “people in general.” “L’” means “it,” “him,” or “her,” depending on context; a past participle follows.
FR: On l'aurait accepté sans hésiter.
EN: We would have accepted it without hesitation.

On l'aurait cru, du moins.

At least, that's what one might have thought.

— Idiocracy (2006)

Un énorme serpent, on l'aurait vu.

A huge snake—we would have seen it.

— Harry Potter et la Chambre des secrets (2002)

Un peu plus, et on l'aurait perdu.

Any longer and we would have lost him.

— 3 Idiots (2009)

On l'aurait su.

We would have known.

— Aliens, le retour (1986)

Si le champ était magnétique, on l'aurait su au premier démarrage du tracteur.

If the field were magnetic, we would have known the first time we started the tractor.

— Interstellar (2014)

Si voter changeait quelque chose, on l'aurait interdit.

If voting changed anything, they would have banned it.

On l'aurait jamais retrouvée.

We would never have found her again.

— Le Cercle des neiges (2023)

Il ne nous a rien dit, comme on l'aurait su ?

He didn't tell us anything, as if we would have known?

— Perfetti sconosciuti (2016)

Si la nature était une banque, on l'aurait déjà sauvée.

If nature were a bank, we would have already saved it.