Adjective: insoluble in'sól-yu-bul
- (of a substance) incapable of being dissolved
"Oil is insoluble in water";
- indissoluble, indissolvable [archaic]
- Admitting of no solution or explanation
"an insoluble doubt";
- insolvable [rare], unsoluble [rare], unsolvable, unresolvable
See also: incomprehensible, inexplicable, non-water-soluble, water-insoluble
Antonym: soluble
Encyclopedia: Insoluble