noun (common) (futsuumeishi)noun or participle which takes the aux. verb surutransitive verb backing (an initiative, candidate, etc.);support

noun (common) (futsuumeishi)noun or participle which takes the aux. verb surutransitive verb sports backing up (another player);covering

noun (common) (futsuumeishi)noun or participle which takes the aux. verb surutransitive verb computing backup