Sweetie (3)
There are a few possibilities for this:
my dear
'sweetie' is the definition.
(short for honey)
This is all the clue.
(Another definition for hon that I've seen is " Honourable (abbrev.)".)
(Other definitions for boo that I've seen before include "Shout of dislike" , "Voice disapproval" , "Surprising exclamation" , "Disapproving sound" , "Cry of disapproval as at villain" .)
'sweetie' is the definition.
(I've seen this in another clue)
This is all the clue.
'sweetie' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for my dear that I've seen before include "Dreamy (anag)" , "Cordial opening to letter" .)