Definition of "incognita"

incognita

noun
plural incognitas
1. A woman who is unknown or in disguise.
2. (of a woman) The state of being in disguise.
adjective
not comparable
1. Of a woman: without being known; in an assumed character, or under an assumed title; in disguise.
  Quotations
  Of all places, London is the best for an incognita acquaintance; cards may be exchanged to all eternity without a meeting, and the various circles revolve like planets in their different systems, utterly unconscious of the means and modes of each other's existence.
  1831, L[etitia] E[lizabeth] L[andon], chapter XIV, in Romance and Reality. […], volume I, London: Henry Colburn and Richard Bentley, […], page 120