incognita en · ADJ
Etymology
Borrowed from Italian incognita; see incognito.
Meanings
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(not-comparable) Of a woman: without being known; in an assumed character, or under an assumed title; in disguise; feminine of incognito.
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, […], →OCLC, page 120: