1. clue
I haven't got a clue as to why he quit so suddenly.
give me a clue.
So far, the police have only a few clues to work with
I'm never going to guess the answer if you don't give me a clue.
He published his autobiography with contained clues about...
the footprint in the garden was a big clue
This may give everyone a bit of a clue to the subject of today's story
The habits of highly intelligent people offer a clue as to how to do that.
Personality clues are conveyed in the music’s tempo.
Toxic waste, I guess, is the key clue to that one.
The definition of a clue is something that helps solve a problem or mystery. An example of a clue is telling someone they're getting warmer when looking for a hidden gift.
Agatha Christie’s detective character Hercule Poirot was excellent at following up clues.
Fingerprints were an important clue in this case.
Mike offered me some helpful clues.
Even if he has a clue, he won't let you know it.