Etymograph

English

serene

Serene comes from Latin serēnus ‘clear, cloudless, untroubled’, and perhaps goes back to Proto-Indo-European *kseresnos.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kseresnos1uncertain
  2. Latinc. 75 BCE–200 CEserēnus2‘clear, cloudless, untroubled’
  3. Englishearliest quotation 1708serene2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin serenus
  2. 2 Wiktionary, English serene
  3. Earliest quotation in Wiktionary’s entry: 1708, John Philips, Book II: “The Hoary Froſts, and Northern Blaſts take care /…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kseresnosWiktionary, Latin serenusuncertain
  2. Latinc. 75 BCE–200 CEserēnusWiktionary, English serene‘clear, cloudless, untroubled’
  3. Englishearliest quotation 1708sereneWiktionary, English serene. Earliest quotation in Wiktionary’s entry: 1708, John Philips, Book II: “The Hoary Froſts, and Northern Blaſts take care /…”

Every English word from Proto-Indo-European *kseresnos

Another origin of serene

  1. Proto-Indo-Europeanc. 4500–2500 BCE*seh₁-‘to be long, lasting, slow’reconstructed
  2. Proto-Italicc. 1500–700 BCE*sērosreconstructed
  3. Vulgar Latinc. 100–700 CEsērus‘late’
  4. Vulgar Latinc. 100–700 CE*serānumreconstructedneuter of sērus
  5. Old Frenchc. 842–1400serein‘evening’
  6. Middle Frenchc. 1400–1600serein
  7. Englishtodayserene

Today it means

adj Calm, peaceful, unruffled.

Sources

Sources: Wiktionary, “serene”; the older steps come from the Wiktionary entry for Latin serenus. 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 *kseresnos / serene

Shirt and support for this word