King upsetting maids (5)
I believe the answer is:
midas
'king' is the definition.
(mythical king)
'upsetting maids' is the wordplay.
'upsetting' indicates an anagram.
'maids' is an anagram of 'MIDAS'.
(Other definitions for midas that I've seen before include "I'm sad (anag) -- king of Phrygia" , "His touch made gold" , "Gold-making king" , "Greek mythological king with money-making touch" , "Mythical king who had the power to turn everything to gold" .)