Too cute (4)
I believe the answer is:
twee
'too cute' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for twee that I've seen before include "Excessively sweet" , "Overly cute" , "Overly sentimental or pretty" , "Small and pretty" , "Affectedly dainty or quaint" .)