Unknown vs. Undefined — What's the Difference?
Difference Between Unknown and Undefined
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Compare with Definitions
Unknown
Not known; unfamiliar
A problem unknown in earlier times.
Undefined
Lacking a definition or value.
Unknown
Not identified, ascertained, or established
Received flowers from an unknown admirer.
Undefined
That does not have a meaning and is thus not assigned an interpretation.
The result of division by zero is undefined.
Unknown
Not well known or widely known
An unknown artist.
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Undefined
Not precisely limited, determined, or distinguished;
An undefined term
Undefined authority
Some undefined sense of excitement
Vague feelings of sadness
A vague uneasiness
Unknown
That which is unknown
Investigating the unknown.
Unknown
Something that is not known
This case has many unknowns.
Unknown
A person who is not well known, as to the general public
Cast an unknown in the starring role.
Unknown
An unknown person, especially an Unknown Soldier
The tomb of the unknowns.
Unknown
(Mathematics) A quantity of unknown numerical value.
Unknown
Not known; unidentified; not well known.
Unknown
(algebra) A variable (usually x, y or z) whose value is to be found.
Unknown
Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.
Unknown
A person of no identity; a nonentity
Unknown
Past participle of unknow
Unknown
Not known; not apprehended.
Unknown
An unknown and unexplored region;
They came like angels out the unknown
Unknown
Anyone who does not belong in the environment in which they are found
Unknown
A variable whose values are solutions of an equation
Unknown
Not known;
An unknown amount
An unknown island
An unknown writer
An unknown source
Unknown
Being or having an unknown or unnamed source;
A poem by an unknown author
Corporations responsible to nameless owners
An unnamed donor
Unknown
Not known to exist;
Things obscurely felt surged up from unsuspected depths in her
Unknown
Not famous or acclaimed;
An obscure family
Unsung heroes of the war
Unknown
Not known before;
Used many strange words
Saw many strange faces in the crowd
Don't let anyone unknown into the house
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