insoluble
adjective /ɪnˈsɒljəbl/
/ɪnˈsɑːljəbl/
- (of a problem, mystery, etc.) that cannot be solved or explained
- The problem seemed insoluble.
Oxford Collocations Dictionaryverbs- be
- seem
- remain
- …
- almost
- apparently
- seemingly
- …
- insoluble (in something) (of a substance) that does not dissolve in a liquid
- These chemicals are practically insoluble in water.
Oxford Collocations Dictionaryverbs- be
- highly
- relatively
- almost
- …
- in
opposite soluble
Word Originlate Middle English: from Old French, or from Latin insolubilis, from in- ‘not’ + solubilis, from solvere ‘loosen, unfasten’.