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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

Other Word Forms

  • unsolvable adjective

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.

The partnership will seek to deploy autonomous vehicles in unsolved areas, such as the intersection of roadways, bike lanes and road-adjacent spaces.

From The Wall Street Journal • Mar. 31, 2026

The worst seems to be over with no newly confirmed cases for a week, but there is still an unsolved mystery - why did this outbreak occur?

From BBC • Mar. 27, 2026

One of the biggest unsolved challenges in modern physics is bringing together two powerful theories that describe very different parts of reality.

From Science Daily • Mar. 9, 2026

News of Guthrie’s abduction 18 days ago has triggered a swell of public interest that’s grown as the case goes unsolved.

From Los Angeles Times • Feb. 18, 2026

“That,” Hassan acknowledged, “is one of the great unsolved mysteries of the human condition.”

From "An Abundance of Katherines" by John Green