known

undetermined, unclear, unknown quantity, undisclosed, uncertain, unrevealed, unidentified, indeterminable, unknowable, unidentifiable, unspecified, untested, undefined, unconfirmed, unrecognized, unsure, unseen, undiscovered, unknow, exact, obscure, sketchy, unaware, unproven, untried, mysterious, unexplained, unmapped, unexplored, anonymous, unheralded, undeterminable, uncharted, unfamiliar, undetected, unacknowledged, untraceable, unmentioned, unnamed, unavailable, inaccessible, untold, tightlipped, unassociated, unconsidered, nameless, presumed, unmeasured, unreachable, unrelated, unsuspected, uninhabited, unpredictable, unoccupied, unheard, unstudied, unsuspicious, unprotected, unmeasurable, unobserved, unreported, unbeknownst, insignificant, identifiable, unsung, unexperienced, undiagnosed, unestablished, unchartered, murky, unnoticed, unimagined, unaccounted, undiscoverable, unspecific, unpronounceable, uninvolved, indeterminate, unexploited, inscrutable, unexpected, uncounted, unforeseeable, incalculable, immaterial, undecided, unfixed, unstated, inexplicable, masked, obvious, unfathomable, unusual, unclarified, oblivious, enigmatic, probable, nebulous, invisible, unappreciated, hidden, untraveled, unknowns, barren, con, dream, lie, non, pitfall, secret, drawback, eclipse, lacuna, one, say, something, void, flaw, lesson, mystery, nothing, pre, ble, same, unascertained, assignable, variable, certain, determinable, only, othei

foreigner, outsider

., abandoned infant, agglutination test, basque, cardiomyopathy, chance, chartless, cholera morbus, class, collywobbles, creche, crystallite, drift, elamite, elamitic, eliminate, elimination, essential tremor, explore, flying saucer, folk art, fortune, foundling, foundling hospital, gnetales, guillain-barre syndrome, hazard, idiopathic, idiopathic disease, idiopathic disorder, idiopathy, infectious polyneuritis, jane doe, john doe, ka, kawasaki disease, landry's paralysis, luck, mucocutaneous lymph node syndrome, myocardiopathy, nameless, neurodermatitis, nonspecific urethritis, nsu, order gnetales, over and over, over and over again, potter's field, quadratic, quadratic equation, reiter's disease, reiter's syndrome, richard roe, sarcoidosis, sars, severe acute respiratory syndrome, somea, somewhere, susian, terra incognita, test-cross, testcross, timidity, timidness, timorousness, titration, treasure trove, trove, ufo, uncertain, uncharted, unheard-of, unidentified, unidentified flying object, unknown quantity, unknown region, unmapped, unnamed, unpredictable

interloper, intruder, region, trespasser, variable

alien, anonymous, chartless, dishonorable, inglorious, nameless, obscure, strange, stranger, terra incognita, transcendent, unbeknown, unbeknownst, uncharted, undiagnosed, undiscovered, unexplored, unfamiliar, unheard-of, unidentified, unknowable, unknown quantity, unknown region, unmapped, unnamed, unsung, unsuspected