Mix paste with too much water, perhaps (5)
I believe the answer is:
spate
'too much water perhaps' is the definition.
I can't judge whether this definition defines the answer.
'mix paste' is the wordplay.
'mix' indicates anagramming the letters.
'paste' with letters rearranged gives 'SPATE'.
'with' is the link.
Can you help me to learn more?
(Other definitions for spate that I've seen before include "Sudden forceful flow" , "Flood; sudden burst" , "Tapes found in sudden flood" , "Rush, flood (of river)" , "Sudden river flood" .)