tailspin - definition and synonyms

noun [singular] 

Your browser doesn’t support HTML5 audio

/ˈteɪlˌspɪn/
  1. 1
    an occasion when a plane falls in the sky with its nose (=front part) downwards and its tail (=end part) spinning in a very wide circle

    The plane went into a tailspin.

  2. 2
    informal an occasion when something or someone suddenly gets into a very bad state

    The news sent the nation’s financial markets into a tailspin.