unlikely, improbable
Los expertos dicen que es improbable.
Experts say it's unlikely.
It's so unlikely.
Si, cosa improbable, ha sufrido algún daño, puede reclamar.
If, unlikely as it may be, you have suffered any damage, you can claim.
— La vida de los otros (2006)
Todos creen en la victoria, aunque sea improbable.
Everyone believes in victory, even though it seems unlikely.
Parecía improbable que Tom no viniera al cumpleaños de Mary.
It seemed unlikely that Tom wouldn’t come to Mary’s birthday party.
It's very unlikely.
La primera hipótesis es improbable.
The first hypothesis is unlikely.
— Anatomía de una caída (2023)