Quick fix for a drip (5)
I believe the answer is:
rapid
'quick' is the definition.
(synonyms)
'fix for a drip' is the wordplay.
'fix for' is an anagram indicator (the letters must be fixed into a new order).
'a'+'drip'='adrip'
'adrip' with letters rearranged gives 'RAPID'.
(Other definitions for rapid that I've seen before include "Speedy (5)" , "moving fast" , "Swift, speedy" , "Electrical connector" , "Express" .)