unsolved
adjective/ʌnˈsɑlvd/
Frequency rank: #9,785 most common English word
Meaning
Not yet solved or explained; remaining without a solution.

Example sentence
The detective spent years trying to crack unsolved mysteries that had baffled previous investigators.
Synonyms & related words
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More words in ranks 9,701–9,800
- terminatorsomething or someone that ends or destroys another thing; also a machine or person sent to kill a target.
- tinkerto make small adjustments or repairs to something, often experimentally.
- topographythe arrangement of the natural and artificial features of an area of land, especially its hills, valleys, and rivers.
- unexplainednot accounted for or given a reason; mysterious.
- unintendednot planned or meant to happen; accidental.
- unsuccessfullyin a way that does not achieve the desired result or goal.
- uptakeThe process of absorbing or taking up a substance into a system.
- vantageA position giving a strategic advantage or a commanding view.
- whimA sudden desire or change of mind, especially one that is unusual or unexplained.
- whineto make a long, high-pitched complaining sound or cry.