Opposite words for remove:
introduce, repair, sustain, establish, confirm, support, reinstate, legalize, renew, set up, restore, promote, authorize, continue, cherish, institute, revive, enact.
Usage samples:
  1. Presently she put her hand on Renfrew's arm, which was still round her waist, and tried to remove it.
    "Bye-Ways", Robert Smythe Hichens.
  2. The doctor was ordered to remove, and he went no one seems to know whither.
    "Castles and Cave Dwellings of Europe", Sabine Baring-Gould.
  3. It's your place to remove him.
    "The Bittermeads Mystery", E. R. Punshon.
  4. Then lift off the others and remove the ladder- carefully.
    "As It Was in the Beginning", Philip Verrill Mighels.