USE UP

{v. phr.} 1. To use until nothing is left; spend or consume completely. * /Don't use up all the soap. Leave me some to wash with./ * /Jack used up his last dollar to see the movies./ Compare: GIVE OUT(5). 2. {informal} To tire completely; make very tired; exhaust; leave no strength or force in. - Usually used in the passive. * /After rowing the boat across the lake, Robert was used up./ Compare: GIVE OUT(4), WEAR OUT.