A person who is indifferent or apathetic.

A unitary authority in the historical county of Somerset, England formed in April 1996 on the abolition of the County of Avon from Bath and Wansdyke districts. Not administered as a part of Somerse...

(idiomatic) An individual who abuses or exceeds his/her authority over others, frequently in petty ways.

present participle of unsettle