Etymograph

English

rubor

Rubor comes from Latin rubor ‘redness’, from rubeō ‘to be red or ruddy’, and ultimately from Proto-Indo-European *h₁rewdʰ-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₁rewdʰ-1‘red’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₁rudʰéh₁ti1‘to be red’reconstructed
  3. Proto-Italicc. 1500–700 BCE*ruðēō1reconstructed
  4. Latinc. 75 BCE–200 CErubeō1‘to be red or ruddy’
  5. Latinc. 75 BCE–200 CErubor1‘redness’
  6. Englishtodayrubor1

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, English rubor

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₁rewdʰ-Wiktionary, English rubor‘red’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₁rudʰéh₁tiWiktionary, English rubor‘to be red’reconstructed
  3. Proto-Italicc. 1500–700 BCE*ruðēōWiktionary, English ruborreconstructed
  4. Latinc. 75 BCE–200 CErubeōWiktionary, English rubor‘to be red or ruddy’
  5. Latinc. 75 BCE–200 CEruborWiktionary, English rubor‘redness’
  6. EnglishtodayruborWiktionary, English rubor

Linked words

through Proto-Indo-European *h₁rewdʰ- ‘red’

red, rust, reddish, rowan, rouse, roux, redness, russel, roan, ruddy, corroborate, erythema, robusta, rubric, russet, rufous, rubella, ruddock, 33 more

through Proto-Indo-European *h₁rudʰéh₁ti ‘to be red’

rud, 10 more

through Latin rubeō ‘to be red or ruddy’

ruby, 10 more

Today it means

noun redness, one of the main signs of inflammation

Sources

Sources: Wiktionary, “rubor”. 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 *h₁rewdʰ- / rubor

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