painless

/ˈpeɪnləs/
adjective
  1. Causing no physical pain.
    • She found a painless way to remove the splinter.
    • Modern injections are nearly painless.
    • The dentist promised the procedure would be painless.
  2. Not difficult or unpleasant; easy or smooth.
    • They made the transition to remote work painless.
    • The online registration process was quick and painless.
    • Moving to a new city was surprisingly painless.