a prior commitment
Me temo que tengo un compromiso previo en esa fecha.
I'm afraid I already have a prior commitment on that date.
— La increíble historia de David Copperfield (2019)
Tenía un compromiso previo a las diez.
I had a prior commitment at ten.
Teníamos un compromiso previo.
We had a prior commitment.
Tom no pudo asistir a la reunión por un compromiso previo.
Tom couldn't attend the meeting because of a prior commitment.
I have a prior commitment.