[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 

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