have no idea
fixed phr..fixed phr.. to not know something at all; you use this when you are completely unsure about a fact or a situation.
fixed phr.. to be entirely ignorant of a fact or situation; functions as a more emphatic, idiomatic alternative to 'not know'.
I have no idea where I left my keys.
The tourists have no idea that the museum is closed on Mondays, so they are waiting outside.
The researchers admitted they had no idea how the ancient civilization managed to transport such massive stones across the desert.
often followed by a 'wh-' question word like 'where', 'what', 'why', or 'how'.
teach this as a chunk to replace 'I don't know'; it is very common in spoken English to show total uncertainty.
I don't have idea.I have no idea.the phrase requires 'no' or 'any' (e.g., 'I don't have any idea') to be grammatically complete.