stagnant water or air is not moving and therefore smells unpleasant （水或空气）不流动而污浊的 Few fish survive in the stagnant waters of the lake. 很少有鱼在湖的死水中存活。
not developing, growing or changing 停滞的；不发展的；无变化的 a stagnant economy 停滞的经济 a stagnant population 停滞不前的人口 The housing market has been largely stagnant over the past few months. 过去几个月，房地产市场基本上停滞不前。
Word Originmid 17th cent.: from Latin stagnant- ‘forming a pool of standing water’, from the verb stagnare, from stagnum ‘pool’.