unsolvable
Defies all answers
Unsolvable describes a problem or puzzle that cannot be solved—either because no solution exists or because finding one lies beyond current knowledge or ability.
The detective feared this was an unsolvable case.
In mathematics, certain problems have been proven formally unsolvable, not merely difficult.
The word often carries a sense of frustration or resignation.
Impossible to manage
- insurmountableImpossible to overcome
- irresolvableImpossible to settle
- unworkableImpossible to execute
- hopelessBeyond possibility of success
impossible · uncrackable · impenetrable · deadlocked · stalemate · gridlock · impasse · quagmire
Something hard to fathom
- inexplicableCannot be accounted for
- unexplainedNot yet clarified
- unfathomableBeyond comprehension or measurement
- incomprehensibleImpossible to understand
baffling · perplexing · cryptic · inscrutable · cold case · whodunit · cipher · unknown
Cannot be undone
- incurableCannot be healed
- irremediableImpossible to correct
- irreparableCannot be fixed
- inevitableCertain to occur
inexorable · unchangeable · immutable · terminal · fatal · chronic · inoperable · untreatable
intractable
Impossible to manage
- insurmountableImpossible to overcome
- irresolvableImpossible to settle
- unworkableImpossible to execute
hopeless · impossible · uncrackable · impenetrable · deadlocked · stalemate · gridlock · impasse · quagmire · Gordian knot
enigma
Something hard to fathom
- inexplicableCannot be accounted for
- unexplainedNot yet clarified
- unfathomableBeyond comprehension or measurement
incomprehensible · baffling · perplexing · cryptic · inscrutable · cold case · whodunit · cipher · unknown · riddle
irreversible
Cannot be undone
- incurableCannot be healed
- irremediableImpossible to correct
- irreparableCannot be fixed
inevitable · inexorable · unchangeable · immutable · terminal · fatal · chronic · inoperable · untreatable · permanent
unsolvablesolvable
Capable of resolution
soluble · resolvable · crackable · answerable · tractable
resolve, solve, solution, resolution, dissolve, solved, absolve, dissolving, dissolved