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Synonyms

unsolved

British  
/ ʌnˈsɒlvd /

adjective

  1. not having been solved or explained

    several unsolved murders

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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The case looked like it would remain one of more than 250,000 unsolved homicides in the US.

From BBC ● Oct. 20, 2026

Since April, AI firms have regularly been publishing solutions to previously unsolved mathematical problems as they seek to demonstrate the power of their latest models.

From Barron's ● Oct. 20, 2026

Perhaps the biggest unsolved problem is recreating the dexterity of human hands with high-precision sensors and motors, a shortfall that was on full display when the robot loaded my dishwasher.

From MarketWatch ● Oct. 16, 2026

Members of the public should continue to submit legitimate information about unsolved homicides through PhillyUnsolvedMurders.com,” the police said.

From The Wall Street Journal ● Oct. 9, 2026

How many great problems have gone unsolved because men didn’t know enough, or have enough faith in the creative process and in themselves, to let go for the whole mind to work at it?

From "Flowers for Algernon" by Daniel Keyes

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