noun
an unknown and unexplored region
Synonyms
unknown region
terra incognita
Examples
- they came like angels out the unknown
noun
anyone who does not belong in the environment in which they are found
Synonyms
noun
a variable whose values are solutions of an equation
Synonyms
unknown quantity
adjective
not known
Examples
- an unknown amount
- an unknown island
- an unknown writer
- an unknown source
adjective
being or having an unknown or unnamed source
Synonyms
Examples
- a poem by an unknown author
- corporations responsible to nameless owners
- an unnamed donor
adjective
not known to exist
Examples
- things obscurely felt surged up from unknown depths
adjective
not famous or acclaimed
Synonyms
Examples
- an obscure family
- unsung heroes of the war
adjective
not known before
Synonyms
Examples
- used many strange words
- saw many strange faces in the crowd
- don't let anyone unknown into the house