Speech in clue too complicated (9)
I believe the answer is:
elocution
'speech' is the definition.
(elocution is a kind of speech)
'in clue too complicated' is the wordplay.
'complicated' indicates an anagram (a complex or confusing ordering of the letters).
'in'+'clue'+'too'='incluetoo'
'incluetoo' anagrammed gives 'ELOCUTION'.
(Other definitions for elocution that I've seen before include "Pronunciation" , "first class phrasing?" , "Clear enunciation" , "Art of effective speaking" , "Skill in speaking clearly" .)