dwindling
1. [ adjective ] gradually decreasing until little remains
Synonyms: tapering_off tapering
Related terms: decreasing
2. [ noun ] a becoming gradually less
Synonyms: dwindling_away
Examples:

"there is no greater sadness that the dwindling away of a family"

Related terms: decrease fading_away dwindle
Similar spelling:   dwindle
  dwindle_down