ustedes tranquilícense

calm down

→ tranquilizar
tranquilíc calm + en 3rd-person plural subjunctive + se Reflexive
verb · second plural · imperative Rare #38,868
calm down Plural command used with ustedes; the -se means it’s reflexive (calm yourselves).
SP: Por favor, tranquilícense; todo está bajo control.
EN: Please calm down; everything is under control.
Conjugation of tranquilizar
Imperative
SingularPlural
First — tranquilicémonos
Second tranquilízate tranquilícense
Third tranquilice —

Tranquilícense.

Calm down.

— Un día de furia (1993)

Por favor, tranquilícense todos.

Please, everyone, calm down.

Sí, pero tranquilícense.

Yes, but calm down.

— [REC] (2007)

Tranquilícense y permanezcan sentados.

Calm down and remain seated.

— Adiós, muchachos (1987)

Por favor, tranquilícense.

Please calm down.

— [REC] (2007)

Tranquilícense todos y tómenlo con calma.

Everyone calm down and take it easy.

— Un día de furia (1993)