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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.

This wind phone is dedicated to Robert Byrne, 28, whose 1995 disappearance is still unsolved.

From Los Angeles Times • Jul. 6, 2026

Read our previous coverage of the unsolved case.

From The Wall Street Journal • Jun. 25, 2026

Previously, a problem might be unsolved because it requires genuinely new ideas far beyond anything in our mathematical tool kit.

From Slate • Jun. 22, 2026

One of the biggest unsolved problems in physics centers on a number known as the cosmological constant.

From Science Daily • Jun. 19, 2026

Nowadays the great unsolved problems in mathematics are stated in terms of conjectures that mathematicians are unable to prove.

From "Zero: The Biography of a Dangerous Idea" by Charles Seife

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