es cosa de

a matter of

→ ser
phrase Uncommon #10,568
a matter of Often used in expressions like es cosa de dos or es cosa de un minuto. Depending on context, it can also mean “it takes” or “it’s just a matter of.”
SP: No es cosa de dinero, es cosa de tiempo.
EN: It’s not a matter of money, it’s a matter of time.

Esto es cosa de pandillas, ¿no?

This is gang-related, isn't it?

— Un día de furia (1993)

Hay que enviarlo a la retaguardia, la guerra no es cosa de niños.

He needs to be sent to the rear; war is not child's play.

— La infancia de Iván (1962)

Es cosa de adultos.

It's an adult thing.

— Your Name (2016)

Es cosa de perros.

It's a dog thing.

Esto no es cosa de niños, niña.

This is not child's play, girl.

— Aún estoy aquí (2024)

Es cosa de familia.

It's a family thing.

Es cosa de un segundo.

It's a matter of a second.

Atrás, esto es cosa de mujeres.

Back off, this is a woman's thing.

— Malèna (2000)

Esto es cosa de locos.

This is crazy.

— The Chaser (2008)

Es cosa de las hormonas.

It’s a hormonal thing.

— Juno (2007)

Sólo es cosa de un minuto.

It's just a matter of a minute.

Lo que les pasa es cosa de ellos.

What happens to them is their business.

— Jugada maestra (2026)

Esto es cosa de sirvientes.

This is a servant thing.

Eso de sobrino es cosa de maricas viejas.

That "nephew" business is for old fags.

— Cidade dos Homens (2007)

Es cosa de dos.

It takes two.

Es cosa de un minuto.

It's a matter of a minute.

Eso es cosa de ella.

That's up to her.

— Una historia china de fantasmas (1987)

Esto es cosa de hombres.

This is a man's thing.

Es cosa de hombres.

It's a man's thing.

No es cosa de risa.

It's no laughing matter.

— Juno (2007)

Jugar es cosa de niños.

Playing is for children.

El amor es cosa de dos.

Love is a two-way street.