Deft clue I composed to be misleading (9)
I believe the answer is:
deceitful
'be misleading' is the definition.
('deceitful' can be a synonym of 'misleading')
'deft clue i composed' is the wordplay.
'composed' indicates an anagram.
'deft'+'clue'+'i'='deftcluei'
'deftcluei' anagrammed gives 'DECEITFUL'.
'to' acts as a link.
(Other definitions for deceitful that I've seen before include "Untruthful" , "Duplicitous" , "unreliable" , "Deliberately misleading" , "cheating" .)