lac \lac\ la^k, lakh \lakh\ laumk, n. hind. lak,
   l=akh, l=aksh, skr. laksha a mark, sign, lakh.
   one hundred thousand; also, a vaguely great number; as, a lac
   of rupees. written also lack. east indies
   1913 webster
see also:
lack 

lack \lack\, v. i.
   1. to be wanting; often, impersonally, with of, meaning, to
      be less than, short, not quite, etc.
      1913 webster

            what hour now?
            i think it lacks of twelve.           --shak.
      1913 webster

            peradventure there shall lack five of the fifty.
                                                  --gen. xvii.
                                                  28.
      1913 webster

   2. to be in want.
      1913 webster

            the young lions do lack, and suffer hunger. --ps.
                                                  xxxiv. 10.
      1913 webster

lack \lack\ la^k, n. oe. lak; cf. d. lak slander, laken to
   blame, ohg. lahan, as. le'an.
   1. blame; cause of blame; fault; crime; offense. obs.
      --chaucer.
      1913 webster

   2. deficiency; want; need; destitution; failure; as, a lack
      of sufficient food.
      1913 webster

            she swooneth now and now for lakke of blood.
                                                  --chaucer.
      1913 webster

            let his lack of years be no impediment. --shak.
      1913 webster

lack \lack\, v. t. imp.  p. p. lacked la^kt; p. pr. 
   vb. n. lacking.
   1. to blame; to find fault with. obs.
      1913 webster

            love them and lakke them not.         --piers
                                                  plowman.
      1913 webster

   2. to be without or destitute of; to want; to need.
      1913 webster

            if any of you lack wisdom, let him ask of god.
                                                  --james i. 5.
      1913 webster
see also:
lacked lacking 

lack \lack\, interj. cf. alack.
   exclamation of regret or surprise. prov. eng. --cowper.
   1913 webster
see also:
alack 

lack
     n : the state of needing something that is absent or
         unavailable; "there is a serious lack of insight into the
         problem"; "water is the critical deficiency in desert
         regions"; "for want of a nail the shoe was lost" syn: deficiency,
          want
     v : be without; "this soup lacks salt"; "there is something
         missing in my jewellery box" syn: miss ant: have
see also:
deficiency want miss have 

118 moby thesaurus words for "lack":
   absence, adulteration, arrearage, awayness, bare cupboard,
   bare subsistence, be found wanting, be in want, be insufficient,
   be pinched, be poor, beggarliness, beggary, blank, break, collapse,
   come short, dearth, decline, defalcation, default, defect,
   defectibility, defectiveness, deficiency, deficit, deprivation,
   destitution, discontinuity, drought, empty purse, erroneousness,
   fail, fail of, fall away, fall short, fall shy, fallibility,
   famine, faultiness, gap, go on welfare, grinding poverty, gripe,
   hand-to-mouth existence, hiatus, homelessness, immaturity,
   impairment, imperfection, impoverishment, impurity, inaccuracy,
   inadequacy, inadequateness, incompleteness, indigence,
   inexactitude, inexactness, insufficiency, interval, kick the beam,
   lacuna, lag, lose ground, mediocrity, mendicancy, miss,
   missing link, moneylessness, necessitousness, necessity, need,
   neediness, neverness, nonexistence, nonoccurrence, nonpresence,
   not answer, not hack it, not make it, not make out, not measure up,
   not qualify, not stretch, not suffice, nowhereness, omission,
   outage, patchiness, paucity, pauperism, pauperization, penury,
   pinch, privation, require, run short, run short of, scantiness,
   scarcity, shortage, shortcoming, shortfall, sketchiness, slump,
   starvation, starve, stop short, subtraction, ullage, underage,
   undevelopment, unevenness, unperfectedness, unsoundness, want,
   wantage