Can't I lie about pinching daughter's uniform? (9)
I believe the answer is:
identical
'uniform?' is the definition.
(thesaurus)
'can't i lie about pinching daughter's' is the wordplay.
'about' indicates anagramming the letters.
'pinching' is an insertion indicator (taking inside).
'daughter' becomes 'd'.
'cant'+'i'+'lie'='cantilie'
'cantilie' is an anagram of 'ientical'.
'ientical' placed around 'd' is 'IDENTICAL'.
(Other definitions for identical that I've seen before include "Duplicate" , "Exactly alike, the same in every detail" , "Like two peas in a pod" , "Selfsame" , "showing no change" .)