function - definition and synonyms

verb [intransitive] 

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present tense
present participlefunctioning
past tensefunctioned
past participlefunctioned
  1. 2
    to operate in the same way as something else
    function as:

    a phrase that functions as an adverb

  2. 3
    to do all the things that you normally do

    Some patients cannot function without their drugs.

     Synonyms and related words