unknown
//ʌnˈnoʊn//
Adjective
unknownCanonical form
1
Not known or familiar; not within the range of one's knowledge or experience.
We traveled to an unknown part of the country.
2
Not identified or established; having an unidentified nature or origin.
The police received a package from an unknown sender.
Synonym
Noun
unknownSingular
unknownsPlural
1
A person or thing that is not known or not famous.
The singer was an unknown before winning the competition.
2
A quantity or variable whose value is not yet determined, especially in mathematics.
In this equation, x is the unknown.