\Thiev"ish\, a.
1. Given to stealing; addicted to theft; as, a thievish boy,
   a thievish magpie.
2. Like a thief; acting by stealth; sly; secret.
         Time's thievish progress to eternity. --Shak.
3. Partaking of the nature of theft; accomplished by
   stealing; dishonest; as, a thievish practice.
         Or with a base and biosterous sword enforce A
         thievish living on the common road.   --Shak.
   -- {Thiev"ish*ly}, adv. -- {Thiev"ish*ness}, n.