avisarle

to let him/her know, to inform him/her, to tell him/her

→ avisar
avis warn + ar Infinitive + le 3rd-person singular indirect object
verb Rare #39,825
to let him/her know, to inform him/her, to tell him/her “-le” is an indirect object pronoun meaning “to him/her/you (formal)”.
SP: Voy a avisarle cuando llegue.
EN: I'm going to let him/her know when I arrive.
Conjugation of avisar
Imperative
SingularPlural
Second avísame avísenme
Third avise avisen
Past
Indicative present
SingularPlural
First aviso avisamos
Third avisa —
Subjunctive present
SingularPlural
First aviso avisamos
Third avisa —
Indicative future
SingularPlural
First avisaré —
Subjunctive future
SingularPlural
First avisaré —
Indicative past
SingularPlural
First avisé avisamos
Third avisó avisaron

Tenemos que avisarle.

We need to warn him.

Tengo que avisarle a Tom.

I need to warn Tom.

Vamos a avisarle que ya está aquí su paciente, por favor.

We'll let you know that your patient is here, please.

— Roma (2018)

Desearía poder avisarle a Tom que estamos llegando.

I wish I could let Tom know we're arriving.

Intentaba avisarle para salvarle.

I was trying to warn him in order to save him.

— Durante la tormenta (2018)

Sólo quería avisarle.

I just wanted to let you know.

— Hellfire (2026)