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Etymology

rule out

/ruːl aʊt/

phrasal verb

Origin

Latin

regula — straight stick, bar, or pattern

Overview

Meaning Now

  • To dismiss, exclude, or eliminate someone or something from consideration or possibility.
  • To make something impossible by virtue of circumstances or facts.

Language path

Latin → Old French → Middle English → English

Earliest form

rule out

Earliest period

19th century

Journey

The phrase originates from the physical act of drawing a line through a list or ledger entry to indicate that a specific item or candidate is no longer valid or applicable. It transitioned from a literal clerical action to a general idiomatic expression for logical exclusion.

Evolution

  1. Latin

    regula

    “straight edge used for drawing lines”

  2. Middle English

    rule

    “a measuring instrument; a standard”

  3. 19th century English

    rule out

    “to cross out with a line”

    Metaphorical extension from drawing a line through an entry to signify its removal or invalidation

Connections

Word parts

rule

root

to exercise authority or mark with a line

out

other

away from consideration

Related across languages

  • French

    règle

    rule or ruler

  • Spanish

    regla

    rule or ruler

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