peak - definition and synonyms

adjective [only before noun] 

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/piːk/
  1. 2
    a peak level of something is when it is highest

    Peak demand for gas is around 5.30.

    1. a.
      often humorous used to refer to something that has reached the highest degree of popularity, with the result that it starts to become less popular

      We have reached peak beard. From now on, beards will dwindle and fail, soon to be despised and shunned.

      It is difficult to tell if we are at peak tattoo.