stagnant stagnant /ˈstægnənt/

adjective

1. () Not circulating or flowing  ( dead , stagnant )
   not circulating or flowing
    Dead air
   dead air
    Dead water
   dead water
    Stagnant water
   stagnant water
   
2. Not growing or changing; without force or vitality  ( moribund , stagnant )
   not growing or changing; without force or vitality