notify someone
Tendremos que avisar a nuestros amigos para que nos ayuden.
We'll have to ask our friends for help.
Chicos, hay que avisar a los forenses.
Guys, we need to notify the forensic team.
— Contratiempo (2017)
Tendré que avisar a mi jefe que no vendré mañana.
I'll have to let my boss know that I won't be coming in tomorrow.
You have to notify the police.
— Mujeres al borde de un ataque de nervios (1988)
Tenemos que avisar a su familia.
We have to notify his family.