dwindle

verb4

1. •
   To decrease, shrink, diminish, reduce in size or intensity.

   • Their supplies began to dwindle after a week.
   • Interest in the project slowly dwindled.
2. •
   To lessen; to bring low.

   • Our drooping days are dwindled down to nought. — 1749
3. •
   (figurative) To fall away in quality; degenerate, sink.

   • VVearie Seu'nights, nine times nine, / Shall he dvvindle, peake, and pine: […] — 1606
4. •
   To break up or disperse.

   • there were only five hundred foot and three hundred horse left with him, for the blocking of Plymouth; the rest were dwindled away — 1702