Overly inquisitive (4)
I believe the answer is:
nosy
'overly inquisitive' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nosy that I've seen before include "Fragrant" , "Intrusive in nasal way" , "Prying, snoopy" , "Meddlesome" , "Inclined to poke into other people's affairs" .)