Manager sobs uncontrollably (4)
I believe the answer is:
boss
'manager' is the definition.
(I've seen this before)
'sobs uncontrollably' is the wordplay.
'uncontrollably' is an anagram indicator (I've seen this in other clues).
'sobs' anagrammed gives 'BOSS'.
(Other definitions for boss that I've seen before include "One in charge; stud" , "designer" , "Take charge of" , "(One's) chief" , "Leader - knob on shield" .)