Etymograph

English

ruthless

Ruthless comes from Middle English reuþeles ‘ruthless, cruel’, from reuþe ‘Pitifulness’, and perhaps ultimately from Proto-Indo-European *krew(H)-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*krew(H)-1uncertain
  2. Proto-Germanicc. 500 BCE–200 CE*hrewwaną2‘to cause regret, to rue’reconstructed
  3. Proto-West Germanicc. 200–500 CE*hreuwan2‘to cause pain, regret’reconstructed
  4. Proto-West Germanicc. 200–500 CE*hreuwu2‘regret’reconstructed
  5. Old Englishc. 450–1150hrēow2‘regret, remorse’
  6. Middle Englishc. 1150–1500rewe2‘pity, sorrow, rue’
  7. Middle Englishc. 1150–1500reuþe2‘Pitifulness’
  8. Middle Englishc. 1150–1500reuþeles2‘ruthless, cruel’
  9. Englishearliest quotation 1725ruthless2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Proto-Germanic *hrewwaną
  2. 2 Wiktionary, English ruthless
  3. Earliest quotation in Wiktionary’s entry: 1725, Homer, The Odyssey of Homer: “At length their rage the hoſtile Pow’rs reſtrain, /…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*krew(H)-Wiktionary, Proto-Germanic *hrewwanąuncertain
  2. Proto-Germanicc. 500 BCE–200 CE*hrewwanąWiktionary, English ruthless‘to cause regret, to rue’reconstructed
  3. Proto-West Germanicc. 200–500 CE*hreuwanWiktionary, English ruthless‘to cause pain, regret’reconstructed
  4. Proto-West Germanicc. 200–500 CE*hreuwuWiktionary, English ruthless‘regret’reconstructed
  5. Old Englishc. 450–1150hrēowWiktionary, English ruthless‘regret, remorse’
  6. Middle Englishc. 1150–1500reweWiktionary, English ruthless‘pity, sorrow, rue’
  7. Middle Englishc. 1150–1500reuþeWiktionary, English ruthless‘Pitifulness’
  8. Middle Englishc. 1150–1500reuþelesWiktionary, English ruthless‘ruthless, cruel’
  9. Englishearliest quotation 1725ruthlessWiktionary, English ruthless. Earliest quotation in Wiktionary’s entry: 1725, Homer, The Odyssey of Homer: “At length their rage the hoſtile Pow’rs reſtrain, /…”

Linked words

through Middle English rewe ‘pity, sorrow, rue’

row, rue, ruefully, 7 more

Today it means

adj Without pity or compassion; cruel, pitiless.

Sources

Sources: Wiktionary, “ruthless”; the older steps come from the Wiktionary entry for Proto-Germanic *hrewwaną. 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 / Proto-Indo-European *krew(H)- / ruthless

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