unstoppable

/ʌnˈstɑpəbəl/
adjective
  1. Impossible to stop or prevent; continuing despite obstacles.
    • Her determination to succeed was unstoppable.
    • The floodwaters were unstoppable, covering the entire valley.
    • The team's winning streak seemed unstoppable.
  2. Extremely successful or powerful; not able to be defeated.
    • The virus proved unstoppable despite all efforts to contain it.
    • The new smartphone became an unstoppable force in the market.
    • He felt unstoppable after winning the championship.