anticlimax - definition and synonyms

noun [countable/uncountable] 

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/ˌæntiˈklaɪmæks/
singularanticlimax
pluralanticlimaxes
  1. something that is not as exciting as you expected it to be so that you feel disappointed

    The day had proved something of an anticlimax.

derived word

anticlimactic

 

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/ˌæntiklaɪˈmæktɪk/
adjective