Messing around idly, Dee gave up (7)
I believe the answer is:
yielded
'gave up' is the definition.
(I've seen this before)
'messing around idly dee' is the wordplay.
'messing around' indicates anagramming the letters.
'idly'+'dee'='idlydee'
'idlydee' anagrammed gives 'YIELDED'.
(Other definitions for yielded that I've seen before include "Produced, provided" , "Gave way under pressure" , "Produced - admitted superiority" , "given away" , "resigned" .)