Blow it (4)

I think it could be either:

Which length description are you looking for?:

fail

'blow it' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for fail that I've seen before include "Come to naught" , "Be unable to achieve one's object" , "Don't succeed" , "Be unsuccessful, say in exam" , "Flunk" .)

I've seen this clue in the Sydney Morning Herald.

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.