reversal - definition and synonyms

noun 

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/rɪˈvɜː(r)s(ə)l/
singularreversal
pluralreversals
  1. 1
    [countable/uncountable] a change in something, so that it becomes the opposite of what it was
    reversal of:

    We saw a marked reversal of trends in oil prices.

    a reversal of fortune(s):

    The economy is suffering a dramatic reversal of fortune.

  2. 2
    [countable] a problem, difficulty, or failure that prevents you from being successful

    The events were a reversal for the government and its allies.

  3. 3
    [countable/uncountable] a situation in which you and another person exchange your activities or status

    a reversal of roles