任にん意い保ほ険けんMeaningsNoun1. voluntary insurance; optional insurance; extra insurance; vehicle insurance in addition to the basic mandatory insuranceKanji used任obligation意idea保preserve険risky and steepPitch accentにんいほけんComposed of任にん意いoptional; voluntary; arbitrary; random; discretionary; facultative; spontaneous; anyNo-adjective保ほ険けんinsurance; guarantee; warrantyNoun