How come? (3)

I believe the answer is:

'how come?' is the definition.
('why' can be a synonym of 'how come')

This is the entire clue.

(Other definitions for why that I've seen before include "How come?" , "Question" , "For what reason?" .)

I've seen this clue in The Sun, the Penny Press and The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.