Etymograph

English

failure

Failure comes from Anglo-Norman failer, from Old French faillir ‘to fail’, from Vulgar Latin *fallīre, from Latin fallō ‘to deceive’.

  1. Latinc. 75 BCE–200 CEfallō1as fallere‘to deceive; to disappoint’
  2. Vulgar Latinc. 100–700 CE*fallīre1reconstructed
  3. Old Frenchc. 842–1400falir2as faillir‘to fail’
  4. Anglo-Normanc. 1066–1400failer2
  5. Englishearliest quotation 2012failure2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Old French falir
  2. 2 Wiktionary, English failure
  3. Earliest quotation in Wiktionary’s entry: 2012, Phil McNulty, Chelsea 2-1 Liverpool: “For Liverpool, their season will now be regarded as…”.

Lineage

  1. Latinc. 75 BCE–200 CEfallōWiktionary, Old French faliras fallere‘to deceive; to disappoint’
  2. Vulgar Latinc. 100–700 CE*fallīreWiktionary, Old French falirreconstructed
  3. Old Frenchc. 842–1400falirWiktionary, English failureas faillir‘to fail’
  4. Anglo-Normanc. 1066–1400failerWiktionary, English failure
  5. Englishearliest quotation 2012failureWiktionary, English failure. Earliest quotation in Wiktionary’s entry: 2012, Phil McNulty, Chelsea 2-1 Liverpool: “For Liverpool, their season will now be regarded as…”

Word family

English words that share an ancestor with failure, grouped by the ancestor they share, most familiar first.

through Proto-Indo-European *(s)gʷʰh₂el- ‘to stumble’

  • asphalt ← asphaltum ← ἄσφαλτος ← σφάλλω

through Proto-Italic *falsō

  • default ← defaut ← defaute ← fallo
  • falsely ← falsly ← fals ← fals ← falsus
  • falsetto ← falso ← falsus ← fallō

through Latin fallō ‘to deceive, beguile, trick, cheat, delude, ensnare, disappoint’

  • fault ← faute ← faute ← *fallita ← falsus
  • false ← fals ← falsus
  • faux ← faulx ← fals ← falsus
  • fallacy ← fallaci ← fallace ← fallācia ← fallāx
  • fallacious ← fallacieux ← fallācia ← fallāx
  • fallible ← fallibilis
  • falsify ← falsifier ← falsificāre ← falsificus ← falsus
  • falsity ← fausseté ← falsitas ← falsus

20 more relatives in the full family tree

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Today it means

noun State or condition of not meeting a desirable or intended objective, opposite of success.

Sources

Sources: Wiktionary, “failure”; the older steps come from the Wiktionary entry for Old French falir. 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 / Latin fallō / failure