WordWeb Online

1. Gradually decreasing until little remains
   - tapering, tapering off

1. A becoming gradually less
   "there is no greater sadness that the dwindling away of a family";
   - dwindling away

1. Become smaller or lose substance
   "Her savings dwindled down";
   - dwindle away, dwindle down

See also: decreasing

Type of: decrease, diminish, drop-off, fall, lessen, lessening