no lo sé

I don't know

→ no
phrase Very common #792
I don't know A very common way to say you do not know something. Literally it includes lo, meaning "it" or "that," but in English it is usually just translated as "I don't know."
SP: No lo sé todavía.
EN: I don't know yet.

Porque no lo sé.

Because I don't know.

Niño, no lo sé.

Kid, I don't know.

— Solo en casa (1990)

No lo sé, aún lo estoy meditando.

I don't know, I'm still thinking about it.

— Juego sucio (Infernal Affairs) (2002)

Ahora no lo sé.

Now I don't know.

Realmente, ya no lo sé.

Honestly, I don't know anymore.

— Los Tenenbaums. Una familia de genios (2001)

No lo sé, dímelo .

I don't know, you tell me.

Te lo juro que no lo sé.

I swear I don't know.

— Perfectos desconocidos (2016)

Ah, no lo sé.

Ah, I don't know.

— El odio (1995)

No lo sé, es posible.

I don't know, it's possible.

No lo sé Jean-Pierre.

I don't know, Jean-Pierre.

— Los visitantes (1993)

Realmente no lo sé.

I really don't know.

— Los Tenenbaums. Una familia de genios (2001)

Para ser honesta, no lo sé.

To be honest, I don't know.

No lo sé, rompí el sobre en mil pedazos.

I don't know, I tore the envelope into a thousand pieces.

— Doña Clara (2016)

Tal vez Dallas, no lo sé.

Maybe Dallas, I don't know.

— La ciudad de las estrellas (La La Land) (2016)

No lo sé, hermano.

I don't know, brother.

— Los hermanos demolición (2026)

Exactamente a dónde, no lo sé.

Exactly where, I don't know.

— Cónclave (2024)

No lo sé con seguridad.

I don't know for sure.

No lo sé, señorita, se lo juro.

I don't know, miss, I swear.

— Roma. Ciudad abierta (1945)

Bueno, ¡no lo sé!

Well, I don't know!

No lo sé, la comida es buena.

I don't know, the food is good.

— Los hermanos demolición (2026)

No hay nada aquí y nunca habrá nada que no lo sé ya.

There is nothing here and there will never be anything that I don't already know.

— El agente secreto (2025)

No lo sé seguro, mi Capitán.

I'm not sure, Captain.

— El laberinto del fauno (2006)

No lo sé, viejo.

I don't know, man.

— Cidade dos Homens (2007)

No lo sé, no creo que sea seguro ir.

I don't know, I don't think it's safe to go.

— La ciudad de las estrellas (La La Land) (2016)

No lo sé, Ben quería hacer algo.

I don't know, Ben wanted to do something.

— Elephant (2003)

No lo sé-¿Lo que dice tu profesor es verdad?

I don't know—is what your teacher says true?

— A Silent Voice (2016)

En realidad no lo sé.

Actually, I don't know.

— Lars y una chica de verdad (2007)

No lo sé, no me cae bien.

I don't know, I don't like him.

— Black Phone 2 (2025)

Tom podría estar en la cocina, pero no lo sé.

Tom might be in the kitchen, but I don't know.

La verdad es que no lo sé.

I really don't know.

No lo sé, Iris.

I don't know, Iris.

— Arco (2025)

Vaya, eso no lo sé.

Wow, I don't know that.

Simplemente no lo sé.

I simply don't know.

Ahora, no lo sé.

Now, I don't know.

— La noche americana (1973)

No lo sé, Mahendra lo sabe.

I don't know; Mahendra knows.

— Devdas (2002)

No lo sé, amigo.

I don't know, friend.

— El hombre de la Tierra (2007)

De verdad que no lo sé.

I really don't know.

— El imperio de las sombras (2016)

No lo sé, de verdad.

I don't know, really.

— El hundimiento (2004)

Tal vez, no lo sé.

Maybe, I don't know.

— Happy Together (1997)

Debe ser buena, aunque no lo sé porque nunca me la tiré.

It must be good, although I don't know because I've never slept with her.

— Academia Rushmore (1998)

Que no lo sé.

I don't know.

— American Gangster (2007)

No lo sé, empezó a decir cosas sin sentido.

I don't know, he started saying nonsensical things.

— Arco (2025)

Quizás no lo sé.

Maybe I don't know.

— Dos hermanas (2003)

Verás, no lo sé.

You see, I don't know.

— El agente secreto (2025)

No lo sé, eso es lo que me han dicho.

I don't know, that's what I've been told.

— Elephant (2003)

Qué, no lo sé.

What, I don't know.

— Las noches de Cabiria (1957)

De veras que no lo sé.

I really don't know.

— A Taxi Driver: Los héroes de Gwangju (2017)

No lo sé con certeza, pero seguro tiene que ver con lo de ayer.

I don't know for sure, but it's definitely related to what happened yesterday.

Yo no lo sé.

I don't know.

— Bajrangi Bhaijaan (2015)

No lo sé, se lo habrán imaginado.

I don't know, you must have imagined it.

No lo sé, hombre.

I don't know, man.

Siempre sueño lo mismo y no lo sé.

I always dream the same thing and I don't know.

Quizá, no lo sé.

Maybe, I don't know.

No lo sé exactamente, pero creo que está muy deprimido.

I don't know exactly, but I think he's very depressed.

— Los Tenenbaums. Una familia de genios (2001)

No lo sé, te aseguro que no es lo acordado.

I don't know, I assure you that's not what was agreed.

— Ágora (2009)

De verdad no lo sé.

I really don't know.

No lo sé, lo juro.

I don't know, I swear.

Dios, no lo sé.

God, I don't know.

Pues no lo sé.

Well, I don't know.

— Casi famosos (2000)

No lo sé ¿Que tengo que hacer?

I don't know. What do I have to do?

— Tumbbad (2018)

No lo sé, ya veremos.

I don't know, we'll see.

— Doña Clara (2016)

No te lo puedo decir porque no lo sé.

I can't tell you because I don't know.

— Caché (Escondido) (2005)

No lo sé, no le vi la cara.

I don't know; I didn't see their face.

— Harry Potter y la piedra filosofal (2001)

No lo sé, Filippo.

I don't know, Filippo.

— Cinema Paradiso (1988)

No lo sé, nunca lo había pensado.

I don't know, I'd never thought about it.

— Arco (2025)

No lo sé, John.

I don't know, John.

— Greenland: El último refugio (2020)

Nina, no lo sé.

Nina, I don't know.

— La asistenta (2025)

No lo sé, Mustang.

I don't know, Mustang.

— Black Phone 2 (2025)

No lo sé, así que dime y sácate ese peso de encima.

I don't know, so tell me and get that weight off your shoulders.

— Dos hermanas (2003)

Te juro que no lo sé.

I swear I don't know.

Mira, no lo sé.

Look, I don't know.

— El botín (2026)

No lo sé, dímelo a mí.

I don't know, you tell me.

Mira, quién fue, yo no lo sé.

Look, who it was, I don't know.

— Tropa de élite 2 (2010)

Solo no lo sé.

I just don't know.

— Los visitantes (1993)

Le juro que no lo sé.

I swear I don't know.

La verdad, no lo sé.

I really don't know.

— Ratatouille (2007)

No lo sé, es como les dije.

I don't know, it's as I told you.

— Elephant (2003)

No lo sé Annik.

I don't know, Annik.

— Control (2007)

Realmente no lo sé, Gracie.

I really don't know, Gracie.

— Die My Love (2025)

No lo sé, quizá por el hecho de ser oficial.

I don't know; perhaps because it's official.

— Roma. Ciudad abierta (1945)

No lo sé, han pasado dos años ya.

I don't know, it's been two years already.

— El viento se levanta (2013)

Ya no lo sé.

I don't know anymore.

— State and Main (2000)

No lo sé con exactitud.

I don't know exactly.

Te he dicho que no lo sé.

I told you I don't know.

Todavía no lo sé.

I don't know yet.

— American Splendor (2003)

No lo sé, señora.

I don't know, ma'am.

— Una segunda madre (2015)

No lo sé, jefe.

I don't know, boss.

No lo sé ni yo.

I don't even know myself.

— Las noches de Cabiria (1957)

No lo sé, tío.

I don't know, man.

— American Gangster (2007)

No lo sé, niña.

I don't know, girl.

— Aún estoy aquí (2024)

Ahora mismo no lo sé.

I don't know right now.

— Los Tenenbaums. Una familia de genios (2001)

Aún no lo sé.

I don't know yet.

— Blade Runner 2049 (2017)

No lo sé ¿y si le han atropellado o?

I don't know—what if they've been run over or something?

— Caché (Escondido) (2005)

No lo sé, ¿qué crees ?

I don't know, what do you think?

— Fearless - Sin miedo (2006)

Te dije que no lo sé.

I told you I don't know.

Lo juro, no lo sé.

I swear, I don't know.

— Una batalla tras otra (2025)

Sinceramente, no lo sé.

Honestly, I don't know.

— La noche americana (1973)

No lo sé, no lo sé.

I don't know, I don't know.

— Lars y una chica de verdad (2007)

Juro por Dios que no lo sé.

I swear to God I don't know.

— Bajrangi Bhaijaan (2015)

No lo sé, Gus.

I don't know, Gus.

— Lars y una chica de verdad (2007)

Pensaba que te estaba protegiendo, pero, no lo sé.

I thought I was protecting you, but I don't know.

— Hunting Season (2025)

No lo sé, pequeña; no lo sé.

I don't know, little one; I don't know.

— El tambor de hojalata (1979)

No lo sé, Lunga.

I don't know, Lunga.

— Bacurau (2019)

No lo sé, ahí.

I don't know, there.

— Anora (2024)

No lo sé, colgaron.

I don't know, they hung up.

— Amores perros (2000)

Ya te dije que no lo sé.

I already told you I don't know.

No lo sé, el domingo llevé al parque a mi señora.

I don't know; on Sunday, I took my wife to the park.

— Las diabólicas (1955)

Pues, no lo sé.

Well, I don't know.

— Mujeres al borde de un ataque de nervios (1988)

No lo sé, es un negro.

I don't know, he's a Black man.

— Cidade dos Homens (2007)

No lo sé aún.

I don't know yet.

— Atlantis: El imperio perdido (2001)

Yo no lo sé, yo no sé nada.

I don't know, I don't know anything.

— Ladrón de bicicletas (1948)

No lo sé, sargento.

I don't know, sergeant.

Juro que no lo sé.

I swear I don't know.

Quizás fue una tragedia, no lo sé.

Perhaps it was a tragedy; I don't know.

— Caché (Escondido) (2005)

No lo sé, hijo.

I don't know, son.

No lo sé exactamente todavía.

I don’t know exactly yet.

Debe de ser un error, no lo sé.

It must be a mistake, I don't know.

— Perfectos desconocidos (2016)

Te aseguro que no lo sé.

I assure you, I don't know.

— La strada (1954)

No lo sé, solo fui con la corriente.

I don't know, I just went with the flow.

— Gully Boy (2019)

No lo sé, la verdad.

I don't know, to be honest.

— Cuentos de Tokio (1953)

Te lo dije, no lo sé.

I told you, I don't know.

No lo sé todavía.

I don’t know yet.

— Funny Games (1997)

No lo sé, voy a divorciarme.

I don't know, I'm going to get a divorce.

— Academia Rushmore (1998)

No lo sé, no creo.

I don't know, I don't think so.

— Adiós, muchachos (1987)

No lo sé, Ed.

I don't know, Ed.

— Greenland: El último refugio (2020)

No lo sé.

Don't know.

— El médico de Budapest (2020)

La tía no lo sé.

The aunt—I don't know.

— Piku (2015)

No lo sé, no veo nada.

I don't know, I don't see anything.

— Hunting Season (2025)

No lo sé, Jimmy.

I don't know, Jimmy.

— Uno de los nuestros (1990)

No lo sé, Miss Tanner se encargó de comprar las entradas.

I don't know, Miss Tanner took care of buying the tickets.

— Suspiria (1977)

No lo sé, amor.

I don't know, love.

— Una segunda madre (2015)

No lo sé, debe ser la junta médica.

I don't know, it must be the medical board.

— Salyut-7: Héroes en el espacio (2017)

O no quería hacerlo, no lo sé.

Or maybe he didn’t want to do it, I don’t know.

— Caché (Escondido) (2005)

No lo sé, en algún lugar detrás de la parada de autobús.

I don't know, somewhere behind the bus stop.

— Dil se.. (1998)

Ay, no lo sé.

Oh, I don't know.

— [REC] (2007)

No lo sé, pregúntale a la madre.

I don't know, ask the mother.

— Naturaleza muerta (2006)

No lo sé, estaba muy misteriosa.

I don't know, she was being very mysterious.

— Roma. Ciudad abierta (1945)

Pero no lo sé.

But I don't know.

— Zeta (2026)

No lo sé con certeza.

I don't know for sure.

— The Internship (2026)

No lo sé, señor.

I don't know, sir.

— The Chaser (2008)

Cree que no lo sé.

He thinks I don't know.

— The Internship (2026)

Eso no lo sé.

I don't know that.

— Asesinos (2015)

No lo sé, inténtelo.

I don't know, try it.

— La gran belleza (2013)

Maldición, no lo sé.

Damn, I don't know.

— Parásitos (2019)

Para serte sincero, no lo sé.

To be honest, I don't know.

— Buena suerte, pásalo bien, no mueras (2026)

No lo sé exactamente.

I don't know exactly.

— Un simple accidente (2025)

No lo sé, tendrás que seguir leyendo.

I don't know; you'll have to keep reading.

— El espinazo del diablo (2001)

No lo sé, mamá.

I don't know, Mom.

— Roofman: Un ladrón en el tejado (2025)

No lo sé ¿ recuerdas las tonterías que hacías cuando tenías seis años?

I don't know. Do you remember the silly things you used to do when you were six?

— Caché (Escondido) (2005)

En el patio, no lo sé.

In the courtyard, I don't know.

— Sin amor (2017)

No lo sé, ¿nos morimos?

I don't know, are we going to die?

— Turno de noche (2026)

Ya te dije, no lo sé.

I already told you, I don't know.

— Salyut-7: Héroes en el espacio (2017)

No lo sé, no lo conozco.

I don't know; I don't know him.

— Ladrón de bicicletas (1948)

No lo sé, Frodo.

I don't know, Frodo.

— El señor de los anillos: La comunidad del anillo (2001)

Porque yo no lo sé.

Because I don't know.

No lo sé, papá.

I don't know, Dad.

No lo sé, Laura.

I don't know, Laura.

— ¡Que te den profe! (2013)

Le estoy diciendo que no lo sé.

I'm telling you that I don't know.

— Contratiempo (2017)

He dicho que no lo sé.

I said I don't know.

No lo sé, Terry.

I don't know, Terry.

— La gran enfermedad del amor (2017)