A person who or thing which releases (in various senses); one who sets free. Cf. releasor, n.

A person who or (occasionally) thing which sets someone or something free; a liberator.

A person who or (occasionally) a thing which liberates; a deliverer.

One who or that which enfranchises; in senses of the verb.

In extended use (now usually in form messiah): an actual or expected liberator or saviour of an oppressed people, country, etc.; a zealous leader…