Synonyms for Deplete:

n.

cut back, trim down, top-slice, halve, shrivel. continue, give out, run out, desiccate, dry up. deplete (noun)
eat, use up, wipe out, exhaust, consume, run-through, eat up.

v.

consume (verb)
dissipate, consume, spend, exhaust, expend, devour.
consume, exhaust supply (verb)
diminish, use up, reduce, spend, lessen, decrease, dry up, expend, drain, impoverish.
consumption (verb)
eat up, consume, wipe out, exhaust, use up, eat.
decrease (verb)
lessen, concentrate, drain, abbreviate, die down, decrease, decrement, deflate, shrink, diminish, erode, truncate, contract, curtail, deduct, abate, compress, shorten, dwindle, subside, abridge, compact, recede, lower.
diminish (verb)
crop, condense, taper, lighten, nip, shave, bob, clip, pare, downgrade, reduce, shear, trim, weed, cull, prune, minimize.
lose (verb)
dispossess, drop, debit, forfeit, divest, lose, misplace, dissolve.

Other synonyms:

run out. impoverish, desiccate. consume
expend.
lose
lose.
run through
run-through.
use up
consume.
Other relevant words:
dry up, use up, eat up, desiccate, run out, give out, eat, impoverish, wipe out.