Spanish phrase
Voy a faltar ~.
Meaning
I will not be able to attend ___.
When to use it
States inability to attend an event. Used to notify organizers or coworkers, often giving a reason and arrangements for coverage.
Example dialogue
Voy a faltar a la reunión del jueves; tengo un viaje de trabajo.
I will not be able to attend Thursday's meeting; I have a business trip.
Entendido, enviaré las notas y cubriré tu parte.
Understood, I'll send the notes and cover your part.