dwindling dwindling /ˈdwɪndlɪŋ/

adjective

1. () Gradually decreasing until little remains  ( tapering , tapering off , dwindling )
   gradually decreasing until little remains
   

noun

1. A becoming gradually less  ( dwindling , dwindling away )
   a becoming gradually less
    There is no greater sadness that the dwindling away of a family
   there is no greater sadness that the dwindling away of a family