shrewd

adjective12

1. •
   Showing clever resourcefulness in practical matters.
2. •
   streetwise, street-smart.
3. •
   Knowledgeable, intelligent, keen.
4. •
   Nigh accurate.
5. •
   Artful, tricky or cunning.
6. •
   Severe, intense, hard.
7. •
   Sharp, snithy, piercing.
8. •
   (no longer used) Bad, evil, threatening.
9. •
   (no longer used) Noxious, scatheful, mischievous.

   • They were wont to please the Fairies, that they might doe them no shrewd turnes, by sweeping clean the Hearth and setting by it […] — 1687
10. •
    (no longer used) Abusive, shrewish.
11. •
    (no longer used) Scolding, satirical, sharp.

    • Leonato: By my troth, niece, thou wilt never get thee a husband, if thou be so shrewd of thy tongue. — 1598
12. •
    (no longer used) Portending, boding.