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unknownadjective alien, anonymous, concealed, cryptic, esoteric, foreign, hidden, incognito, indeterminate, inscrutable, insoluble, insolvable, mysterious, nameless, never experienced before, new, no credit to, novel, secret, strange, to be announced, unaccounted for, unascertained, undetermined, undistinguished, unfamiliar, unfixed, unheard-of, unidentified, unlabeled, unmeasured, unnamed, unnoted, unnoticed, unpopular, unrenowned, unseen, unset, unsettled, unspecified, unstudied, untold, untracked, withheld, without a name
See also: anonymous, blind, clandestine, concealed, covert, defunct, disputable, hidden, inexplicable, mysterious, obscure, remote, secret, surreptitious, ulterior, undisclosed, unprecedented
UNKNOWN. When goods have been stolen from some person unknown, they may be so described in the indictment; but if the owner be really known, an indictment alleging the property to belong to some person unknown is improper. 2 East's P. C. 651 1 Hale, P. C. 512; Holt's N. P. C. 596 S. C. 3 Eng. Common Law Rep. 191; 8 C. & P. 773. Vide Indictment; Quidam.