Dictionary
1unknown
adjective un·known \-ˈnōn\
: not known
: not well-known : not famous
Full Definition of UNKNOWN
: not known or not well-known; also : having an unknown value <an unknown quantity>
See unknown defined for English-language learners
See unknown defined for kids
ADVERTISEMENT
First Known Use of UNKNOWN
14th century
Related to UNKNOWN
- Synonyms
- unbeknownst (also unbeknown)
- Antonyms
- familiar, hackneyed, old, time-honored, tired, warmed-over
Rhymes with UNKNOWN
agon, aitchbone, alone, atone, backbone, Bastogne, bemoan, Big Stone, birthstone, Blackstone, bloodstone, bluestone, bondstone, Boulogne, breastbone, bridge loan, brimstone, brownstone, call loan, calzone, Capone, capstone, cell phone, cheekbone, chinbone, cogon, cologne, Cologne, colon, colón, Colón, condone, copestone, corn pone, curbstone, cyclone, daimon, dapsone, debone, depone, dethrone, dial tone, disown, Dordogne, downzone, dripstone, drop zone, drystone, earphone, earth tone, end zone, enthrone, estrone, fieldstone, firestone, Firestone, flagstone, flowstone, flyblown, footstone, freestone, free zone, full-blown, gallstone, gemstone, Gijón, goldstone, gravestone, greenstone, grindstone, hailstone, halftone, handblown, hard stone, headphone, headstone, hearthstone, high-flown, hip bone, homegrown, hormone, hornstone, impone, ingrown, inkstone, in stone, intone, jawbone, jewel tone, keystone, León, leone, life zone, limestone, lodestone, long bone, Maidstone, milestone, millstone, moonstone, mudstone, nose cone, oilstone, orgone, ozone, pay phone, peptone, pinbone, pinecone, piñon, pipestone, postpone, potstone, propone, redbone, red zone, rhinestone, sandstone, shade-grown, shinbone, siltstone, snow cone, soapstone, splint bone, strike zone, T-bone, tailbone, thighbone, time zone, toadstone, tombstone, touchstone, touch-tone, tritone, trombone, turnstone, twelve-tone, two-tone, Tyrone, unthrone, war zone, well-known, whalebone, wheel-thrown, whetstone, windblown, wishbone, Yangon
2unknown
noun
the unknown : a place, situation, or thing that you do not know about or understand
: a person who is not famous or well-known
: something that is not known or not yet discovered
Full Definition of UNKNOWN
1
: one that is not known or not well-known; especially : a person who is little known (as to the public)
2
: something that requires discovery, identification, or clarification: as a : a symbol (as x, y, or z) in a mathematical equation representing an unknown quantity b : a specimen (as of bacteria or mixed chemicals) required to be identified as an exercise in appropriate laboratory techniques
See unknown defined for English-language learners
First Known Use of UNKNOWN
1597
UNKNOWN Defined for Kids
1unknown
adjective un·known \ˌən-ˈnōn\
Definition of UNKNOWN for Kids
: not known <… it was cut all over with strange lines and figures that might be the letters of an unknown language. — C. S. Lewis, The Lion, the Witch and the Wardrobe>
2unknown
noun
Definition of UNKNOWN for Kids
: one (as a quantity) that is unknown
Learn More About UNKNOWN
Browse
Next Word in the Dictionary: unknown quantityPrevious Word in the Dictionary: unknowing All Words Near: unknown
ADVERTISEMENT
Seen & Heard
What made you want to look up unknown? Please tell us where you read or heard it (including the quote, if possible).