shiftiest

/SH IH1 F T IY0 AH0 S T/
adjective
  1. 1

    Subject to frequent changes in direction.

  2. 2

    (of a person's eyes) Moving from one object to another, not looking directly and steadily at the person with whom one is speaking.

  3. 3

    Having the appearance of being dishonest, criminal or unreliable.

    โ€œHe was a shifty character in a seedy bar, and I checked my wallet was still there after talking to him.โ€

  4. 4

    Resourceful; full of, or ready with, shifts or expedients.

Source: https://en.wiktionary.org/wiki/shiftiest, https://en.wiktionary.org/wiki/shifty