By the book

prep_phrase

Definitions

Prep_phrase
  1. 1
    In a manner which strictly adheres to rules, legal requirements, or official procedures. idiomatic

    "As far as he is concerned, he umpired by the book."

  2. 2
    In a manner which appears too studied, ritualized, and therefore artificial. broadly, idiomatic

    "Romeo: Sin from thy lips? O trespass sweetly urged! Give me my sin again. They kiss again. Juliet: You kiss by th' book."

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