Faucet problem (4)
I believe the answer is:
drip
'faucet problem' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for drip that I've seen before include "Fall in droplets -- weedy person" , "Fall in small droplets as from tap" , "Slow leak" , "Means of intravenous feeding" , "Soppy person" .)