Bright girl taken in by a cunning male (6)
I believe the answer is:
agleam
'bright' is the definition.
(similar in meaning)
'girl taken in by a cunning male' is the wordplay.
'girl' becomes 'ag' ().
'taken in by' means one lot of letters goes inside another.
'a cunning' indicates an anagram.
'male' with letters rearranged gives 'leam'.
'ag' going into 'leam' is 'AGLEAM'.
(Other definitions for agleam that I've seen before include "scintillating" , "Sparkling" , "Shining brightly" , "Bright" .)