Invasive, meddlesome (9)
I believe the answer is:
intrusive
I believe this clue is a double definition.
'invasive' is the first definition.
(similar in meaning)
'meddlesome' is the second definition.
(similar in meaning)
(Other definitions for intrusive that I've seen before include "Meddlesome" , "disturbing" , "Pushy" , "Being present uninvited" , "Coming in uninvited" .)