tireless russian

• неутоми́мый

  tireless, indefatigable

• неуста́нный

  tireless, indefatigable, unwearying

• безуста́нный

  indefatigable, tireless, unwearying, unremitting

• неуста́нно

  tirelessly, ceaselessly, unflaggingly, constantly, incessantly

Examples

• Том неутоми́м.

  Tom is tireless.