How to Say “I Know Everything” in Spanish

lo sé todo
/lo se todo/from spelling rules
In Spanish, "I know everything" is said as lo sé todo.
A statement used to claim that one possesses all the necessary information or knowledge about a subject.

What does it mean word for word?

The phrase is composed of lo (it), sé (I know) and todo (everything/all).

Which one should you use?

Lo sé todo, ¿eh? is an informal way to assert knowledge with a playful tone, while Estoy al tanto de todo translates to "I'm aware of everything" and is a formal way to convey knowledge.

How does it change in a sentence?

In the phrase lo sé todo, the pronoun lo acts as a direct object marker for the verb saber, even when todo is present to emphasize the totality of the knowledge.

How do you pronounce it?

/lo se todo/

Did you know?

  • Adding ya to create ya lo sé todo shifts the meaning from a statement of fact to an expression of impatience or annoyance with the speaker.
  • The word sabiondo describes someone who thinks they know everything, but unlike the neutral lo sé todo, it is specifically used to mock someone's arrogance.
  • The word sé must have a written accent to differentiate it from the reflexive pronoun se, which is one of the most common words in the Spanish language.

Examples in context

  • Lo sé todo.
    I know everything.
    This example shows the use of lo sé todo.
    Tatoeba #507139 by Shishir, translation #392308 by CM
  • En mi trabajo, yo lo sé todo sobre el funcionamiento de la empresa.
    At my job, I know everything about how the company works.
  • ¡No me cuentes nada sobre el programa, lo sé todo, ¿eh?
    Don't tell me anything about the TV show, I know everything, okay?
  • No me preguntes más, lo sé todo.
    Don't ask me anymore, I know everything.
  • Sobre este tema, lo sé todo.
    About this subject, I know everything.

Example conversation

Elena and Mateo are discussing a plan for a trip.

  1. Elena

    Elena, ¿estás lista para el viaje?
    Elena, are you ready for the trip?
  2. Mateo

    Sí, lo sé todo sobre el itinerario.
    Yes, I know everything about the itinerary.
  3. Elena

    ¿Estás segura de que no falta nada?
    Are you sure nothing is missing?
  4. Mateo

    Confía en mí, lo sé todo.
    Trust me, I know everything.

Sources

  • IPA marked “from spelling rules” is derived from standard Spanish spelling, where Wiktionary gives none.
  • Example sentences: Tatoeba CC BY 2.0 FR.
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Layla Ann
Layla AnnHelp make this guide better. Spot a mistake, know another way to say it, or have an example from real life? Share it below.
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