interchangeable - definition and synonyms

adjective 

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/ˌɪntə(r)ˈtʃeɪndʒəb(ə)l/
  1. if two things are interchangeable, you can put each one of them in the place where the other was, or you can use one instead of the other, and the effect will be the same

    The termsthesis’ and ‘dissertation’ were at one time interchangeable.

derived words

interchangeability

 

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/ˌɪntə(r)ˌtʃeɪndʒəˈbɪləti/
noun [uncountable]

interchangeably

adverb