unknown meaning and definition

UNKNOWN noun

Definition of unknown (noun)

1. an unknown and unexplored region
   • "they came like angels out the unknown"
   • synonyms: terra incognita, unknown region
2. anyone who does not belong in the environment in which they are found
   • synonyms: alien, stranger
   • antonym: acquaintance
3. a variable whose values are solutions of an equation
   • synonyms: unknown quantity

UNKNOWN adjective

Definition of unknown (adjective)

1. not known
   • "an unknown amount"; "an unknown island"; "an unknown writer"; "an unknown source"
   • antonym: known
2. being or having an unknown or unnamed source
   • "a poem by an unknown author"; "corporations responsible to nameless owners"; "an unnamed donor"
   • synonyms: nameless, unidentified, unnamed
3. not known to exist
   • "things obscurely felt surged up from unknown depths"
4. not famous or acclaimed
   • "an obscure family"; "unsung heroes of the war"
   • synonyms: obscure, unsung
5. not known before
   • "used many strange words"; "saw many strange faces in the crowd"; "don't let anyone unknown into the house"
   • synonyms: strange