stagnate

stagnate
[stagˈneɪt, ˈstagneɪt]
verb
  1. [no obj.](of water or air) cease to flow or move; become stagnant
    (水,空气)不流动,停滞;变臭
    ■(figurative)cease developing; become inactive or dull
    (喻)不发展;变得死气沉沉,变呆滞
    teaching can easily stagnate into a set of routines.
    教育很容易固化为变一套陈规。
    [as adj. stagnating]stagnating consumer confidence.
    停滞不前的消费者信心。
派生
stagnation
noun
语源
  1. mid 17th cent.: from Latin stagnat- 'settled as a still pool', from the verb stagnare, from stagnum 'pool'
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