adjective. 1 impossible to dissolve esp. in a given liquid; 2 impossible to solve or understand

adjective. 1 very many; 2 so many as to be impossible to count; countless

adjective. not able to be comforted; or incapable of being relieved by comforting

verb. 1 to remove from association with; 2 to sever a mental connection or association of; separate

adjective. able to be perceived or distinguished

noun. reticence; shyness

noun. the act or process of finding out the nature of an illness or injury by examining its signs and symptoms

noun. something given in return for or to make up for something else

noun. property or other security put forward to guarantee repayment of a loan; adjective. 1 extending in parallel or being to the side of; 2 supplementary