episodic - definition and synonyms

adjective formal 

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/ˌepɪˈsɒdɪk/
  1. happening as a series of separate events that have no clear connection between them
    1. a.
      happening from time to time in a way that is not regular

      episodic earthquakes

derived word

episodically

 

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/ˌepɪˈsɒdɪkli/
adverb