1

Are the following sentences acceptable was to say, "I have no idea":

  1. No tengo idea.
  2. No tengo ni idea.
  3. No tengo nada de idea.

Are there any additional ways to express this?

2
  • 2
    "No tengo nada de idea" doesn't sound too natural to me (Spain).
    – Yay
    Feb 5 '16 at 21:39
  • 1
    Estoy de acuerdo con @Yay. Las dos primeras suenan bien. La tercera no.
    – DGaleano
    Feb 5 '16 at 21:41
7

Out of the three options you have, "No tengo ni idea" would be the most natural:

  • No tengo ni idea de cómo resolver este problema.

A shortened version, "ni idea", can be used as well. But it's more frequently used as an answer.

  • ¿Cuándo construyeron este monumento?
  • Ni idea.

You can use also "No tengo la menor idea" (I don't have the slighest/faintest idea).

1

"no tengo idea" es más natural para mí :-)

1

Other way includes y yo qué sé.
To my ear, no tengo idea is the most used. Even the expression no tengo ninguna idea is widely used as a double negative to show emphasis. However, the expression no tengo nada de idea seems to have been taken from a translator, and this form is not idiomatic.

1

The most common way to say "I have no idea" is "No tengo ni idea". Also, you can say only "ni idea", for example:

-¿Sabes cómo se llama ese chico? (Do you know the name of that boy?) -Ni idea. (No idea, that is "I have no idea")

The second one is most used in colloquial situations.

0

My tendency would be to say

No tengo la menor idea.
-2

Ni tengo una idea

sounds like it would work.

2
  • You should elaborate a little bit more why. I actually don't think it works. The meaning to me is closer to "Neither I have and idea" quite different from the original intent "I have no idea".
    – Diego
    Feb 6 '16 at 18:19
  • @Diego Well may be that's why he put would work instead of will work. But, this answer should've been more elaborated.
    – Schwale
    Feb 6 '16 at 23:21

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