Etymograph

English

reasonless

Reasonless comes from Middle English resonles.

  1. Middle Englishc. 1150–1500resonles1
  2. Englishtodayreasonless1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English reasonless

Lineage

  1. Middle Englishc. 1150–1500resonlesWiktionary, English reasonless
  2. EnglishtodayreasonlessWiktionary, English reasonless

Formed from reason + -less

Proto-Indo-European *h₂er- ‘to put together’

…

Latin ratus ‘considered’

Latin ratiō ‘reason’

Anglo-Norman raisun

Middle English resoun

English reason

Every English word from Middle English resonles

Today it means

adj Lacking reason or purpose.

Sources

Sources: Wiktionary, “reasonless”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.

Etymograph / Middle English resonles / reasonless

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