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Unknown

adjective

/ʌnˈnoʊn/

Meaning

not known or identified; unfamiliar

not known or familiar

The author of this letter remains unknown.

The origin of the disease remains unknown.

unfamiliar, unidentified, mysterious, nameless, undiscovered, hidden, secret

Entry 1

unfamiliar, unidentified, mysterious, nameless

Entry 2

unfamiliar, undiscovered, hidden, secret

known, familiar, identified, recognized, discovered

Entry 1

known, familiar, identified, recognized

Entry 2

known, familiar, discovered

unknown person, unknown origin, unknown cause, unknown source, unknown fact

Entry 1

unknown person, unknown origin, unknown cause

Entry 2

unknown source, unknown origin, unknown fact

only slightly warm; lukewarm; showing little enthusiasm

Like an idyll; extremely happy, peaceful, or picturesque.

Kind and generous; sincere and honest; warmly receptive;

Clever in a deceitful or cunning way.

lacking a clear plan, purpose, or enthusiasm

important, meaningful, or having a noticeable effect