doubt
Dudo sobre qué oración es gramaticalmente correcta.
I'm unsure which sentence is grammatically correct.
Dudo mucho que nos volvamos a ver.
I highly doubt we'll see each other again.
— Juego sangriento [バトル・ロワイアル] (2000)
Dudo incluso mientras escribo esta carta.
I have doubts even as I write this letter.
— El nombre de la venganza (2002)
Aunque estés rico, dudo que seas feliz.
Even if you're rich, I doubt you're happy.
Dudo la sinceridad de tu amistad.
I doubt the sincerity of your friendship.
I doubt he'll come in time.