Source : Webster's Revised Unabridged Dictionary (1913)

Meddlesome \Med"dle*some\, a.
   Given to meddling; apt to interpose in the affairs of others;
   officiously intrusive. -- {Med"dle*some*ness}, n.

Source : WordNet®

meddlesome
     adj : intrusive in a meddling or offensive manner; "an interfering
           old woman"; "bustling about self-importantly making an
           officious nuisance of himself"; "busy about other
           people's business" [syn: {interfering}, {meddling}, {officious},
            {busy}, {busybodied}]