Answer:

depletes

Answer	Crossword Clue
DEPLETES	Drains
DEPLETES	Seriously reduces
DEPLETES	Uses up

DEPLETES	Drains.
DEPLETES	Exhausts
DEPLETES	Empties
DEPLETES	Exhausts, as resources
DEPLETES	Empties wholly or partly
DEPLETES	Gradually uses up resources

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.