More meddlesome (6)
I believe the answer is:
nosier
'more meddlesome' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for nosier that I've seen before include "Senior (anag)" , "comparatively curious" , "More curious in nasal way" , "More inquisitive" , "More curious, being senior" .)