Sooner than get here breathless (3)
I believe the answer is:
ere
'sooner than' is the definition.
(I've seen this in another clue)
'here breathless' is the wordplay.
'ERE' is hidden within the letters.
But, I am unsure how this is indicated.
'get' acts as a link.
Can you help me to learn more?
(Other definitions for ere that I've seen before include "Before (in poetry)" , "One who steals" , "Old word for before" , "Archaic word for before - a palindrome" , "Before (in time)" .)