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
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Recent Examples of unknown
By then, archaeologists have concluded, the Tequesta settlement was likely past its peak and had been in a long decline, though the reasons are unknown.
—
Andres Viglucci,
Miami Herald,
30 June 2026
Georgia's library dwarfs both countries, and most of it remains unknown outside its borders.
—
Michelle Williams,
Forbes.com,
30 June 2026
Although much of Dabney's life remains unknown, the surviving records reveal more about him than is known about many people from the 18th and 19th centuries.
—
Jonathan Miller,
CBS News,
30 June 2026
The number of vehicles involved remained unknown as of Tuesday, according to the coroner.
—
Sally Krutzig,
Idaho Statesman,
30 June 2026
See All Example Sentences for unknown
Andres Viglucci,
Miami Herald,
30 June 2026
Georgia's library dwarfs both countries, and most of it remains unknown outside its borders.
—
Michelle Williams,
Forbes.com,
30 June 2026
Although much of Dabney's life remains unknown, the surviving records reveal more about him than is known about many people from the 18th and 19th centuries.
—
Jonathan Miller,
CBS News,
30 June 2026
The number of vehicles involved remained unknown as of Tuesday, according to the coroner.
—
Sally Krutzig,
Idaho Statesman,
30 June 2026
See All Example Sentences for unknown
Recent Examples of Synonyms for unknown
Adjective
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Staff weathering the storm The Cubs are more than halfway through the season and playing around a 90-win pace, yet their clubhouse often looks like a scene out of spring training, with new names, unfamiliar faces, and players coming and going.
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Fredericson urges new ruckers to warm up before each session, hydrate well and tell someone the route when heading into unfamiliar areas.
Adjective
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Last month, many of those companies gathered alongside military officials to address what was clearly an urgent problem requiring novel solutions.
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Preserving a robust problem-solving culture, through methods like case debates and mentorship, is vital to build human expertise AI cannot replicate, preventing a future where organizations lack the ability to tackle novel problems.
Adjective
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When that’s not enough, Google may add random noise to the data that can further obscure identities.
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This seems, if anything, deliberately obscure.
Adjective
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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.
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That same night, unbeknownst to friends and family, the couple spontaneously wed in a courthouse wedding.
Adjective
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Informal Beyblade battles are popping up in strangest of places, with players huddling in parks, gyms and shopping malls.
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The falseness of the medium, though, jibed with the falseness of most attempts, throughout American history, to make sense of this enormous, strange man.
Adjective
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What often goes unrecognized is that disability does not diminish intelligence, ambition or capability.
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Expecting Women To Perform Emotional Labor Women are often expected to organize celebrations, mentor new employees, mediate conflicts, and provide emotional support—all tasks that benefit organizations but often go unrecognized in promotion decisions.
Adjective
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The planet’s oceans are at unprecedented temperatures for this time of year, breaking the all-time June record, according to new data, with alarming implications for global weather and marine life.
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The Qatari plane's transfer to the United States marked an unprecedented $400 million donation from a foreign country, with the aircraft later requiring extensive additional work to meet security and technical standards to become Air Force One.
Adjective
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Mask ban for law enforcement officers, criminal records sealing and tenant protections are among a host of new measures taking effect.
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In the videos, women share their transformations in which their post-divorce selves are often fitter, with clearer skin and a new wardrobe.
Cite this Entry
“Unknown.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unknown. Accessed 3 Jul. 2026.
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