insolvable
Cannot be solved
Insolvable means incapable of being solved: an insolvable puzzle, The mystery remained insolvable.
The word is interchangeable with unsolvable, though unsolvable is more common in everyday speech.
Insolvable appears more often in formal or technical contexts.
Incapable of occurring
- irresolvableImpossible to settle
- hopelessBeyond possibility of success
- insurmountableImpossible to overcome
- unresolvableImpossible to settle
unanswerable · inextricable · deadlock · impasse · stalemate · gridlock · quagmire · dilemma
Something hard to fathom
- conundrumPerplexing problem or question
- riddlePuzzling question to solve
- mysterySomething unexplained or unknown
- paradoxSeemingly absurd truth
cipher · puzzle · brainteaser · quandary · stumper · cryptic · arcane · baffling
Mathematical equality assertion
- theoremDemonstrated logical conclusion
- proofDemonstration of truth
- conjectureGuess from limited facts
- hypothesisTestable proposed explanation
algorithm · polynomial · differential · integral · quadratic · topology · geometry · calculus
Cannot be healed
- irreparableCannot be fixed
- irreversibleCannot be undone
- irremediableImpossible to correct
- unfixableCannot be mended
terminal · chronic · inoperable · untreatable · lasting · enduring · persistent · indelible
impossible
Incapable of occurring
- irresolvableImpossible to settle
- hopelessBeyond possibility of success
- insurmountableImpossible to overcome
unresolvable · unanswerable · inextricable · deadlock · impasse · stalemate · gridlock · quagmire · dilemma · predicament
enigma
Something hard to fathom
- conundrumPerplexing problem or question
- riddlePuzzling question to solve
- mysterySomething unexplained or unknown
paradox · cipher · puzzle · brainteaser · quandary · stumper · cryptic · arcane · baffling · perplexing
equation
Mathematical equality assertion
- theoremDemonstrated logical conclusion
- proofDemonstration of truth
- conjectureGuess from limited facts
hypothesis · algorithm · polynomial · differential · integral · quadratic · topology · geometry · calculus · Fermat
incurable
Cannot be healed
- irreparableCannot be fixed
- irreversibleCannot be undone
- irremediableImpossible to correct
unfixable · terminal · chronic · inoperable · untreatable · lasting · enduring · persistent · indelible · immutable
insolvablesolvable
Capable of resolution
soluble · resolvable · answerable · achievable · doable
resolve, solve, solution, dissolve, resolute, absolve, solvent, solvable, insoluble