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Definition of rulebook

rulebook

/ˈruːl.bʊk/
rule · book
Plural:rulebooks
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rulebook Lexical Profile

rulebook Game Scores & Validity

• noun

1

A book or official document containing the formal rules and regulations that govern a particular game, sport, organization, or activity.

Example

"The referee consulted the official rulebook before making a final decision on the disputed play."

2

An established set of conventions, standards, or accepted procedures governing behavior or practice within a specific field or group.

Example

"The innovative startup threw out the traditional corporate rulebook and allowed employees to set their own schedules."

Synonyms
View all synonyms for rulebook

• Rhymes for rulebook

• Nearby Words

ruki
ruki river
rule
rulebook
rulebound
ruler
rulership

Cite this Entry

Wordmom. (2026). Definition of Rulebook. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/rulebook
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