He who or that which bewrays or reveals.

A person who or thing which discloses or reveals something; the maker of a revelation; a revealer.

A person who or thing which reveals something (in various senses of the verb). Chiefly with of.

A person who or thing which discloses something, esp. new or secret information.

A person or thing that discloses, brings to light, or reveals; one who informs against or accuses; a revealer; an informer, an accuser. Obsolete.

A person who, or thing which, discloses or reveals something. Cf. unmask, v.

figurative and in figurative contexts. Something likened to a dark lantern, esp. in either concealing or revealing something.

Cf. to open a person's eyes at open, v. 3b. A person who reveals facts or clarifies a matter to others. rare.