informal2K

UK//nəʊ aɪˈdɪə//US//noʊ aɪˈdiə//

Meaning of No idea

A phrase used to express lack of knowledge about something.

In simple words: I don't know or understand

No idea in a sentence

  • I have no idea where my keys are.
  • She asked me about the project, and I had no idea.
  • Do you know the answer? I have no idea!

How to use No idea

Use in casual conversations when you have no knowledge of something. Avoid in formal situations.

Grammar pattern

standalone phrase

Memory hint

Think of having a light bulb turn off: 'no idea' means no brightness.

Related words

Collocations with No idea

Synonyms for No idea

  • not sure
  • uncertain
  • no clue
  • dunno

Opposites of No idea

Common mistakes with No idea

  • Using it in a formal context where a more serious phrase is needed.
  • Confusing it with 'no clue', which has a similar meaning.

No idea appears in

No idea in other languages

More chunks like No idea

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Frequently asked questions about No idea

What does No idea mean?

I don't know or understand

What is the definition of No idea?

A phrase used to express lack of knowledge about something.

How do you use No idea in a sentence?

I have no idea where my keys are.

Can you give another example of No idea?

She asked me about the project, and I had no idea.

What are synonyms for No idea?

Common alternatives include not sure, uncertain, no clue, dunno.

What is the opposite of No idea?

Opposite meanings include have a clue, know, be certain, understand.

What words go with No idea?

It commonly pairs with have no idea, give no idea, no idea what's going on.

What are common mistakes when using No idea?

Using it in a formal context where a more serious phrase is needed. Confusing it with 'no clue', which has a similar meaning.

How do you pronounce No idea?

US: //noʊ aɪˈdiə//, UK: //nəʊ aɪˈdɪə//. Listen to the audio above to hear native pronunciation.

Is No idea formal or informal?

"No idea" is informal, so it fits casual conversation with friends and family.

When should I use No idea?

Use in casual conversations when you have no knowledge of something. Avoid in formal situations.