qualifier - definition and synonyms

noun [countable] 

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/ˈkwɒlɪˌfaɪə(r)/
singularqualifier
pluralqualifiers
  1. 2
    linguistics the part of a noun group, adjective group, or verb group that comes after the most important word (the head), and adds information about it. For example in the noun group ‘the rules of the game’, the prepositional phrase ‘of the game’ is a qualifier.