1. (a. / adv.) 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.

2. (a.) One unknown or in disguise, or under an assumed character or name.

3. (n.) The assumption of disguise or of a feigned character; the state of being in disguise or not recognized.

anonym anonymity anonymous anonymousness camouflage camouflaged closed meeting closet concealed confidentiality confidentialness cryptonymic cryptonymous disguise disguised domino executive session false colors false face false front guisard guiser impersonator in disguise incog incognita inmost innermost innominate interior intimate inward isolated isolation mask masked masker masque masquerade masquerader masquerading mummer mummery nameless namelessness on the sly personal privacy private private conference privy protective coloration retired retirement secluded seclusion secretly sequestered sequestration smoke screen unacknowledged undefined under cover undesignated unidentified unknown unnamed unrecognizable unrecognized unspecified visor vizard vizard mask withdrawn without a name