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insoluble▼(not solvable; that cannot be solved)adjective[UK: ɪn.ˈsɒ.ljʊb.l̩] [US: ˌɪn.ˈsɑː.ljəb.l̩]
unsolvable▼(not solvable)adjective[UK: ən.ˈsɑːl.və.bəl] [US: ən.ˈsɑːl.və.bəl]
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