[W/K] :: undiluted

  concentrated \concentrated\ adj.
     1. Having a high density of (the indicated substance); as, a
        narrow thread of concentrated ore.
  
     Note: [Narrower terms: undiluted (vs. diluted)]
           [WordNet 1.5]
  
     2. Gathered together or made less diffuse; as, their
        concentrated efforts; his concentrated attention. Opposite
        of distributed or diffused.
  
     Note: [Narrower terms: bunched, bunchy, clustered;
           centered, centred, centralized, focused;
           undivided] [Also See: compact.]
           [WordNet 1.5]
  
     3. Intense; in an extreme degree; -- of mental phenomena; as,
        her concentrated passion held them at bay.
        [WordNet 1.5]
  
     4. being the most concentrated solution possible at a given
        temperature; unable to dissolve still more of a substance.
        Opposite of dilute or unsaturated.
  
     Note: [Narrower terms: supersaturated]
  
     Syn: saturated.
          [WordNet 1.5]
  
     5. reduced to a stronger or more concentrated form; as,
        concentrated sulfuric acid. Opposite of diluted.
  
     Syn: condensed.
          [WordNet 1.5]
  
     6. characterized by intensity; especially when imposed from
        without; -- of actions; as, concentrated study.
  
     Syn: intensive.
          [WordNet 1.5]
  
     7. characterized by mental concentration.
  
     Syn: intent.
          [WordNet 1.5 +PJC]

  Undiluted \Undiluted\
     See diluted.

  undiluted
       adj 1: not diluted; "undiluted milk"; "an undiluted racial strain"
              [ant: diluted]
       2: not mixed; "pure oxygen" [syn: pure, unmixed]

  31 Moby Thesaurus words for "undiluted":
     absolute, bare, clarified, clear, distilled, naked, neat, perfect,
     plain, pure, purified, rectified, sheer, simple, straight,
     unadulterated, unalloyed, unblended, uncombined, uncompounded,
     uncorrupted, uncut, unfortified, unleavened, unmingled,
     unmitigated, unmixed, unqualified, unsophisticated, untinged,
     unwatered