Not have a clue
Synonyms for Not have a clue
- have no idea
- be ignoranthave no idea
- be puzzled
- be perplexedbe puzzled
- be bewilderedbe puzzled
- be baffledbe puzzled
- be mystifiedbe puzzled
- be at a lossbe puzzled
- be at seabe puzzled
- be all at sea
- be clueless
- not have the faintestbe clueless
For more similar words, try Not have a clue on Thesaurus.plus dictionary