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Definitions

unsolved

ADJECTIVE
insoluble
Synonyms
WEAK
baffling difficult impenetrable indecipherable inexplicable inextricable irresolvable mystifying obscure unaccountable unconcluded unfathomable unresolved unsolvable
Antonyms
WEAK
explainable explicable obvious open solvable
ADJECTIVE
unresolved
Synonyms
STRONGEST
moot pending unanswered undecided undetermined unsettled
WEAK
betwixt and between changing doubtful faltering hesitant hesitating hot-and-cold incomplete indecisive irresolute open to question problematical pussyfooting unconcluded unfinished up in the air vacillating vague waffling
Antonyms
STRONGEST
certain decided definite determined settled sure
WEAK
resolved solved

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.

See Examples For:

Dark matter is one of the biggest unsolved mysteries in modern physics.

From Science Daily ● Sep. 6, 2026

The conviction of Duane "Keffe D" Davis in Las Vegas has brought an end to one of the world's most famous unsolved murder cases.

From BBC ● Sep. 1, 2026

While Hubble revealed that the universe is expanding faster than previously thought, Roman will seek to answer some of the other unsolved mysteries, including those of dark matter and dark energy.

From Barron's ● Aug. 30, 2026

Davis’s own words helped reinvigorate the unsolved case in 2018, police said at the time of his indictment.

From The Wall Street Journal ● Aug. 17, 2026

This is one of the great unsolved problems in science.

From "Cosmos" by Carl Sagan

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