Current followers dismiss loser (4)
I believe the answer is:
flow
'current' is the definition.
(I know that current can be written as flow)
'followers dismiss loser' is the wordplay.
'dismiss' suggests deleting specific letters.
'followers' with 'loser' removed is 'FLOW'.
(Other definitions for flow that I've seen before include "Steady continuous stream" , "Current" , "Scapa - , Orkney anchorage" , "Trickle" , "(Forward) movement of liquid" .)