have no idea
Lack any knowledge
To have no idea is to be completely unaware or uninformed about something.
The phrase emphasizes total ignorance rather than partial knowledge: I have no idea where she went or He had no idea what he was getting into.
It often carries a note of helplessness or honest admission, and can be intensified with words like absolutely or whatsoever.
In casual speech, no idea alone serves as a quick response meaning "I don't know."
- baffledUtterly unable to understand
- no clueState of ignorance
- ignorantLacking knowledge or awareness
- cluelessLacking any understanding
- beats meAdmission of ignorance
perplexed · mystified · unaware · unknowing · confused · puzzled · guessing · unsure · speculating · wondering · at a loss · uncertain · stumped · drawing a blank · lost · bewildered · uninformed · oblivious
have no ideabe positive
Maintain hopeful attitude
know full well · know inside and out · be aware · know the score
have no ideaget it
Understand, often informally
see clearly · know the score · have a handle on · fathom · see the whole picture
have, had, having, haves, have-not, have-nots, noes, idea, ideas