phraseologist

/ˌfreɪziˈɑlədʒɪst/
noun
  1. A person who studies or is an expert in phrases and fixed expressions in a language.
    • The university hired a phraseologist to help create a new dictionary of expressions.
    • The phraseologist spent years collecting common sayings from different cultures.
    • As a phraseologist, she can explain the origin of almost any idiom.
Synonyms
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