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English Lexicon

Rulebook

/ˈruːl.bʊk/
nounCEFR B2 (Upper)Top #4500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A book containing the rules and regulations governing a game, activity, or organization.

    "Before starting the tournament, each player must read the rulebook to understand the game mechanics."
  2. 2

    A set of guidelines or principles that dictate how something should be conducted.

    "The committee referred to the rulebook to ensure all procedures were followed correctly."
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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The word is a compound of 'rule' (derived from Old French 'rule' and Latin 'regula', meaning straight stick or pattern) and 'book' (derived from Germanic root *bōk-, referring to beechwood tablets used for writing). Combined in the 19th century, it originally referred to printed collections of laws or regulations governing games, organizations, or institutions.

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