unknown
adjective
1. not known
- an unknown amount
- an unknown island
- an unknown writer
Similar word(s): unacknowledged, unfamiliar, inglorious, chartless, uncharted, unmapped, unbeknown, unbeknownst, undiagnosed, undiscovered, unexplored, unidentified
2. being or having an unknown or unnamed source
- a poem by an unknown author
Similar word(s): anonymous, nameless, unidentified, unnamed
3. not known to exist
- things obscurely felt surged up from unknown depths
Similar word(s): unsuspected
4. not famous or acclaimed
Similar word(s): inglorious, obscure, unsung
5. not known before
- don't let anyone unknown into the house
Similar word(s): unfamiliar, strange
noun
1. an unknown and unexplored region
- they came like angels out the unknown
Definition categories: location, region
2. anyone who does not belong in the environment in which they are found
Similar word(s): alien, stranger
Definition categories: person, interloper, intruder, trespasser
3. a variable whose values are solutions of an equation
Definition categories: communication, variable