shifty

adjective4

1. •
   Subject to frequent changes in direction.

   • Off he raced, shuffling his bare feet through the hot, dry, shifty sand. — 1929
2. •
   (informal) Having the appearance of being dishonest, criminal, or unreliable.

   • He was a shifty character in a seedy bar, and I checked my wallet was still there after talking to him.
3. •
   Moving from one object to another; not looking directly and steadily at the person with whom one is speaking.

   • […] his quick, shifty eyes turned from the manager to the lethal weapons over the chimney, then to the safe, then to the bank, and Mr. Thickens’s back. — 1886
4. •
   Resourceful; full of, or ready with, shifts or expedients.

   • Shifty and thrifty as old Greek or modern Scot, there were few things he could not invent, and perhaps nothing he could not endure. — 1857