have no idea
The phrase "have no idea" is often used to express a complete lack of knowledge or to emphasize the intensity of an experience.
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Definition
B1General
(informal)To be completely unaware or ignorant of something.
Example
- I have no idea where she went.
- They have no idea how to fix the problem.
B2General
(informal)To emphasize that someone cannot fully comprehend the extent of an experience.
Example
- You have no idea how much this means to me.
- They have no idea what it's like to live in a different country.
Similar
Terms that have similar or relatively close meanings to "have no idea":
no ideanot have a cluedon't knowhave the first ideadon't knowisthave no businessknow beans aboutbe not to knowwho knows