(adj): (of unknown regions) not yet surveyed or investigated
(adj): unknown to most people
(adj): predicate), unbeknownst(predicate) -- ((usually used with `to') occurring or existing without the knowledge of
(adj): eluding diagnosis
(adj): not yet discovered
(adj): previously unknown
(adj): not yet identified
(adj): being or having an unknown or unnamed source
(adj): vs. onymous), anon. -- (having no known name or identity or known source
(adj): not known to exist
(adj): vs. suspected) -- (not suspected or believed likely
(adj): not famous or acclaimed
(adj): vs. glorious) -- (not bringing honor and glory
(adj): not known before
(adj): vs. familiar) -- (not known or well known
(n): an unknown and unexplored region
(n): a large indefinite location on the surface of the Earth
(n): anyone who does not belong in the environment in which they are found
(n): someone who intrudes on the privacy or property of another without permission
(n): a variable whose values are solutions of an equation
(n): a symbol (like x or y) that is used in mathematical or logical expressions to represent a variable quantity
