unknown

adjective

ˌən-ˈnōn How to pronounce unknown (audio)
Definition of unknownnext
1
as in unfamiliar
happening or existing without one's knowledge unknown to me was the fact that while I was out, my family was hurriedly preparing a surprise birthday party

Synonyms & Similar Words

Relevance
2
as in novel
not known or experienced before becoming a father brought unknown joy to his life

Synonyms & Similar Words

Antonyms & Near Antonyms
3
as in obscure
not widely known looking for a relatively unknown singer to record the song

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of unknown Police said the motives for the altercation and shooting were unknown. — Iris Kwok, Los Angeles Times, 1 Sep. 2026 The practice was used in cases like the Golden State Killer and Bryan Kohberger, who previously pleaded guilty to killing four University of Idaho students, but is also frequently used in to identify unknown remains in cold cases. — Taylor Romine, CNN Money, 31 Aug. 2026 Just before midnight on the 5400 block of South Cottage Grove Avenue, police sources said a pair of unknown shooters dressed in all black and ski masks shot at the gathering from across the street, and that someone from the crowd returned fire. — Chicago Tribune, 31 Aug. 2026 The victim’s condition and hospital are unknown at this time. — Hannah Hudnall, USA Today, 31 Aug. 2026 See All Example Sentences for unknown
Recent Examples of Synonyms for unknown
  1. unfamiliar
  2. novel
  3. obscure
  4. unbeknownst
  5. strange
  6. unrecognized
  7. unprecedented
  8. new
Adjective
  • For bouquets, Wahlen recommends choosing one type of flower that has already been identified as non-toxic rather than an arrangement filled with unfamiliar stems and greenery, where a dangerous flower may be tucked among otherwise safe blooms.
    — Lauren Paige Richeson, USA Today, 2 Sep. 2026
  • Nalewaja, who attended, said Matsui appeared unfamiliar with issues facing people living in the Sierra foothills.
    — Sacbee.com, Sacbee.com, 2 Sep. 2026
Definition of unfamiliar
Adjective
  • There was nothing particularly novel about the show’s premise, but the scripts were refreshingly dense with jokes, prioritizing laughs over contrived drama or seasonlong relationship arcs.
    — Ben Rosenstock, Vulture, 28 Aug. 2026
  • Expect to discover many novel flavors of Brazil—butiá, cajú, cumaru—worked into the menu in unique ways.
    — Condé Nast, Condé Nast Traveler, 28 Aug. 2026
Definition of novel
Adjective
  • Given most late-summer midterm-election-year weakness has been more than recovered right afterward, the proper course of action now becomes even more obscure.
    — Michael Santoli, CNBC, 31 Aug. 2026
  • In many cases, the robot tail wags the living dog by tricking it—tricking us—into caring about obscure metrics, then gamifying the process of improving them.
    — Hillary Busis, Vanity Fair, 28 Aug. 2026
Definition of obscure
Adjective
  • However, unbeknownst to the girls, the men left the original villa setting and snuck away to Casa Amor, a second filming location where six bombshells in sexy costumes were waiting to steal guys' hearts.
    — Taylor Ardrey, USA Today, 22 June 2026
  • That same night, unbeknownst to friends and family, the couple spontaneously wed in a courthouse wedding.
    — Emily Weaver, PEOPLE, 16 June 2026
Definition of unbeknownst
Adjective
  • Some are quieter this year, some are almost ridiculous, but all of them share a strange sense of purpose.
    — Jim Dobson, Forbes.com, 29 Aug. 2026
  • His attempt to discover what he is supposed to be doing propels him through a succession of increasingly strange encounters, as his search for purpose becomes entangled with his desire for love, friendship and some kind of place in the world.
    — Davide Abbatescianni, Variety, 28 Aug. 2026
Definition of strange
Adjective
  • This often-unrecognized grief associated with the end of reproductive years can be significant even for women who do not want more children.
    — Parents, Parents, 28 Aug. 2026
  • Postpartum depression, affecting 1 in 7 women, often presents as intrusive thoughts, rage, or numbness, not just sadness, leading to unrecognized symptoms.
    — John Samuels, Forbes.com, 17 Aug. 2026
Definition of unrecognized
Adjective
  • As Dolly Parton fans find solace in her music after her death, her songs are surging to unprecedented levels on the charts.
    — KiMi Robinson, USA Today, 2 Sep. 2026
  • New models emerge rapidly, pricing changes frequently, and capabilities improve at an unprecedented pace.
    — Prajkta Waditwar, Forbes.com, 2 Sep. 2026
Definition of unprecedented
Adjective
  • Now is a great time to pick up a new pair of sneakers for fall while prices are low.
    — Anna Traver, InStyle, 1 Sep. 2026
  • With the team entering a new era with a new coaching staff, Baltimore made some moves that were a bit atypical on roster cutdown day.
    — Jeff Zrebiec, New York Times, 1 Sep. 2026
Definition of new

Browse Nearby Words

unknowledgeable
unknown
unlace
See all Nearby Words

Cite this Entry

“Unknown.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unknown. Accessed 4 Sep. 2026.

Copy Citation
Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of apiary

See Definitions and Examples »

Popular in Grammar & Usage

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

A List of Most Commonly Confused Words

Why do we use apostrophes to show possession?

Is it 'nerve-racking' or 'nerve-wracking'?

What's the difference between 'fascism' and 'socialism'?
See More

Popular in Wordplay

See More

The Longest Long Words List

Stay Woke

Ye Olde Nincompoop: Old-Fashioned Words for 'Stupid'

14 Phobias You Probably Haven't Heard Of

The Words of the Week - Sept. 4
See More

Popular

See More

A Who’s Who Regarding ‘Who’s’ and ‘Whose’

The Longest Long Words List

Stay Woke
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
anagrams on a chalk board
Word Builder Quiz Vol. 2 Pick the letter that when added to a word will ma...
See All