Crossword Genius

Proceed (2,5)

Ross

I think it could be either:

Which length description are you looking for?:

8

2,5

go ahead

(Other definitions for go ahead that I've seen before include "Pioneering (green light?)" , "Permission to proceed" , "Signal to proceed" , "Lead" , "Up-and-coming -- authorisation" .)

I've seen this clue in The Guardian and The Times.
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