Fun codes perplexed and puzzled (8)
I believe the answer is:
confused
'puzzled' is the definition.
('confuse' can be a synonym of 'puzzle')
'fun codes perplexed' is the wordplay.
'perplexed' indicates anagramming the letters.
'fun'+'codes'='funcodes'
'funcodes' is an anagram of 'CONFUSED'.
'and' is the link.
(Other definitions for confused that I've seen before include "Unable to think clearly, bewildered" , "Haywire" , "Perplexed, befuddled" , "at sea" , "Mixed up in fun codes" .)