Des, worried about cloak, fled (7)
I believe the answer is:
escaped
'fled' is the definition.
(escaping is a kind of fleeing)
'des worried about cloak' is the wordplay.
'worried' is an anagram indicator.
'about' is an insertion indicator.
'cloak' becomes 'cape' (cape is a kind of cloak).
'des' is an anagram of 'esd'.
'esd' going around 'cape' is 'ESCAPED'.
(Other definitions for escaped that I've seen before include "Fled from captivity" , "Evaded" , "gone!" , "Ran away from confinement" , "Got away from captors" .)