Meddling, a.
Meddlesome. Macaulay.
Shades of meaning
Fernald has no entry of its own for meddling; he lists it under inquisitive, meddlesome.
Where he writes about it:
To intermeddle is to thrust oneself into the concerns of others with a petty officiousness; meddling commonly arises from idle curiosity; "every fool will be meddling," Prov. xx, 3; to interfere is to intrude into others' affairs with more serious purpose, with or without acknowledged right or propriety. — from interpose