adj. 25B6; adjective
some problems are insoluble : UNSOLVABLE, unanswerable, unresolvable; unfathomable, impenetrable, unexplainable, inscrutable, inexplicable.
these minerals are insoluble : INDISSOLUBLE.
adj. 25B6; adjective
some problems are insoluble : UNSOLVABLE, unanswerable, unresolvable; unfathomable, impenetrable, unexplainable, inscrutable, inexplicable.
these minerals are insoluble : INDISSOLUBLE.
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012