Opposite words for finger:
disguise, camouflage, simulate, counterfeit, sham, hide, feign, conceal.
Usage samples:
  1. Cut Finger is a young man; he has many years to live if he will do as I tell him.
    "The Captain of the Gray-Horse Troop", Hamlin Garland.
  2. He touched the second finger.
    "Black Man's Burden", Dallas McCord Reynolds.
  3. She ran her finger over a glass- covered square.
    "Ralestone Luck", Andre Norton.
  4. The wounded man, in all probability, had the ring- finger and the little finger carried off.
    "Louise de la Valliere", Alexandre Dumas, Pere.