[1] : The Collaborative International Dictionary of English v.0.48

shrewd \shrewd\, a. compar. shrewder; superl. shrewdest.
   originally the p. p. of shrew, v.t.
   1. inclining to shrew; disposing to curse or scold; hence,
      vicious; malicious; evil; wicked; mischievous; vexatious;
      rough; unfair; shrewish. obs. --chaucer.
      1913 webster

            egypt hath many shrewd havens, because of the
            great rocks that ben strong and dangerous to pass
            by.                                   --sir j.
                                                  mandeville.
      1913 webster

            every of this happy number
            that have endured shrewd days and nights with us.
                                                  --shak.
      1913 webster

   2. artful; wily; cunning; arch.
      1913 webster

            these women are shrewd tempters with their tongues.
                                                  --shak.
      1913 webster

   3. able or clever in practical affairs; sharp in business;
      astute; sharp-witted; sagacious; keen; as, a shrewd
      observer; a shrewd design; a shrewd reply.
      1913 webster

            professing to despise the ill opinion of mankind
            creates a shrewd suspicion that we have deserved it.
                                                  --secker.
      1913 webster

   syn: keen; critical; subtle; artful; astute; sagacious;
        discerning; acute; penetrating.

   usage: shrewd, sagacious. one who is shrewd is keen to
          detect errors, to penetrate disguises, to foresee and
          guard against the selfishness of others. shrewd is a
          word of less dignity than sagacious, which implies a
          comprehensive as well as penetrating mind, whereas
          shrewd does not.
          1913 webster -- shrewd"ly, adv. -- shrewd"ness,
          n.
          1913 webster
see also:
shrewder shrewdest shrewd sagacious shrewd"ly shrewd"ness 

[2] : WordNet (r) 2.0

shrewd
     adj 1: marked by practical hardheaded intelligence; "a smart
            businessman"; "an astute tenant always reads the small
            print in a lease"; "he was too shrewd to go along with
            them on a road that could lead only to their
            overthrow" syn: astute, sharp
     2: used of persons; "the most calculating and selfish men in
        the community" syn: calculating, calculative, conniving,
         scheming
see also:
astute sharp calculating calculative conniving scheming 

[3] : Moby Thesaurus II by Grady Ward, 1.0

95 moby thesaurus words for "shrewd":
   byzantine, daedalian, machiavellian, machiavellic, acute,
   all-knowing, apperceptive, appercipient, apprehending,
   apprehensive, arch, artful, astute, aware, cagey, calculated,
   calculating, canny, clever, cognizant, comprehending, conscious,
   crafty, cunning, cute, deceitful, deep, deep-laid, designing,
   devious, diplomatic, discerning, farsighted, feline, foresighted,
   foxy, guileful, heady, ingenious, insidious, insightful,
   intelligent, inventive, judicious, keen, knowing, knowledgeable,
   manipulative, mindful, omniscient, pawky, penetrating, perceptive,
   percipient, perspicacious, piercing, polite, politic, prehensile,
   probing, prudent, quick-witted, ready, resourceful, sagacious,
   sage, savvy, scheming, sensible, serpentine, sharp, shifty, slick,
   slippery, sly, smart, smooth, snaky, sneaky, sophistical, stealthy,
   strategic, subtile, subtle, supple, tactical, tidy, trickish,
   tricksy, tricky, understanding, vulpine, wary, wily, wise

Shrewd >> S Words
Shrewd, definition of term: Shrewd
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