Etymograph

English

duodecimate

Duodecimate comes from Latin duodecim ‘twelve’, from decem ‘ten’, and ultimately from Proto-Indo-European *déḱm̥.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*déḱm̥1‘ten’reconstructed
  2. Proto-Italicc. 1500–700 BCE*dekəm1‘ten’reconstructed
  3. Latinc. 75 BCE–200 CEdecem1‘ten’
  4. Latinc. 75 BCE–200 CEduodecim2‘twelve’
  5. Latinc. 75 BCE–200 CEduodecimatus2
  6. Englishearliest quotation 1851duodecimate2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin duodecim
  2. 2 Wiktionary, English duodecimate
  3. Earliest quotation in Wiktionary’s entry: 1851, Matthew LaRue Perrine Thompson, The Church: “We affirm, that to all eternity the apostles are…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*déḱm̥Wiktionary, Latin duodecim‘ten’reconstructed
  2. Proto-Italicc. 1500–700 BCE*dekəmWiktionary, Latin duodecim‘ten’reconstructed
  3. Latinc. 75 BCE–200 CEdecemWiktionary, Latin duodecim‘ten’
  4. Latinc. 75 BCE–200 CEduodecimWiktionary, English duodecimate‘twelve’
  5. Latinc. 75 BCE–200 CEduodecimatusWiktionary, English duodecimate
  6. Englishearliest quotation 1851duodecimateWiktionary, English duodecimate. Earliest quotation in Wiktionary’s entry: 1851, Matthew LaRue Perrine Thompson, The Church: “We affirm, that to all eternity the apostles are…”

Linked words

through Proto-Indo-European *déḱm̥ ‘ten’

century, ten, cent, hundred, dick, decade, sen, hectare, tenfold, dinero, deca, 47 more

through Proto-Italic *dekəm ‘ten’

den, diner, denier, dwt, 19 more

through Latin decem ‘ten’

dean, decimal, doyen, dicker, deni, 19 more

through Latin duodecim ‘twelve’

dozen, 6 more

Today it means

noun Synonym of duodecimvirate: a group of twelve.

Sources

Sources: Wiktionary, “duodecimate”; the older steps come from the Wiktionary entry for Latin duodecim. 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 *déḱm̥ / duodecimate