WordNet (r) 3.0 (2006):

use up
    v 1: use up (resources or materials); "this car consumes a lot
         of gas"; "We exhausted our savings"; "They run through 20
         bottles of wine a week" [syn: consume, eat up, use
         up, eat, deplete, exhaust, run through, wipe
         out]
    2: require (time or space); "It took three hours to get to work
       this morning"; "This event occupied a very short time" [syn:
       take, occupy, use up]

Moby Thesaurus II by Grady Ward, 1.0:

80 Moby Thesaurus words for "use up":
   ablate, absorb, assimilate, beat, bestow, bleed white, burn out,
   burn up, consecrate to, consume, debilitate, dedicate to, deplete,
   devote, devour, digest, do in, do up, drain, drain of resources,
   eat, eat up, employ, enervate, erode, exhaust, expend, fag,
   fag out, fatigue, finish, finish off, flag, frazzle, give over to,
   give to, go, gobble, gobble up, harass, impoverish, ingest, jade,
   knock out, knock up, lose, overfatigue, overstrain, overtire,
   overweary, pass, poop, poop out, prostrate, put in, run, spend,
   spill, squander, suck dry, swallow, swallow up, tire, tire out,
   tire to death, tucker, waste, waste away, weaken, wear, wear away,
   wear down, wear on, wear out, weary, while, while away, wile, wilt,
   wind