Furtive (adjective)

  1. Done by stealth; surreptitious.
  2. Marked by quiet and caution and secrecy; taking pains to avoid being observed.

Origin:

From the latin word "furtivus" which means sneaky, stealthy or surreptitious.

Examples:

  1. He had a furtive look on his face.
  2. She had a furtive glance towards the door.
  3. The furtive movements of the thief attracted attention.
  4. The criminal had a furtive plan to escape.
  5. The furtive behavior of the employee raised suspicion.
Some random words: paranoid, duh, disarray