reviviscent

/ˌrɛvɪˈvɪsənt/
adjective
  1. Tending to bring back to life, consciousness, or activity; reviving or renewing.
    • The old remedy was said to have reviviscent powers for tired muscles.
    • Her speech had a reviviscent effect on the discouraged team.
    • The reviviscent rain brought the parched fields back to green.
Antonyms