a. or adv. [ It. incognito, masc., incognita, fem., L. incognitus unknown; pref. in- not + cognitus known, p. p. of cognoscere: cf. F. incognito, fr. It. See Cognition. ] Without being known; in disguise; in an assumed character, or under an assumed title; -- said esp. of great personages who sometimes adopt a disguise or an assumed character in order to avoid notice. [ 1913 Webster ]
'T was long ago
Since gods come down incognito. Prior. [ 1913 Webster ]
The prince royal of Persia came thither incognito. Tatler. [ 1913 Webster ]
n.;
His incognito was endangered. Sir W. Scott. [ 1913 Webster ]