Etymograph

English

subregnum

Subregnum comes from New Latin subrēgnum ‘subkingdom’, from Latin rēgnum ‘kingdom’, and ultimately from Proto-Indo-European *h₃reǵ- ‘to straighten’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₃reǵ-1‘to straighten’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₃rḗǵs1‘king, ruler’reconstructed
  3. Proto-Italicc. 1500–700 BCE*rēks1‘king’reconstructed
  4. Latinc. 75 BCE–200 CErēx1‘king, ruler’
  5. Latinc. 75 BCE–200 CE*rēgnus1reconstructed
  6. Latinc. 75 BCE–200 CErēgnum1‘kingdom’
  7. New Latinc. 1500–1900subrēgnum2‘subkingdom’
  8. Englishtodaysubregnum2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin subregnum
  2. 2 Wiktionary, English subregnum

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*h₃reǵ-Wiktionary, Latin subregnum‘to straighten’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*h₃rḗǵsWiktionary, Latin subregnum‘king, ruler’reconstructed
  3. Proto-Italicc. 1500–700 BCE*rēksWiktionary, Latin subregnum‘king’reconstructed
  4. Latinc. 75 BCE–200 CErēxWiktionary, Latin subregnum‘king, ruler’
  5. Latinc. 75 BCE–200 CE*rēgnusWiktionary, Latin subregnumreconstructed
  6. Latinc. 75 BCE–200 CErēgnumWiktionary, Latin subregnum‘kingdom’
  7. New Latinc. 1500–1900subrēgnumWiktionary, English subregnum‘subkingdom’
  8. EnglishtodaysubregnumWiktionary, English subregnum

Linked words

through Proto-Indo-European *h₃reǵ- ‘to straighten’

right, source, director, rule, direction, address, direct, region, correct, regular, dress, rank, arrangement, radar, arrange, regime, rack, ana, rogue, realm, royalty, riches, interrogation, raj, regulate, resurrection, rake, erect, richness, rector, regent, anorexia, rectify, insurrection, regency, rectum, incorrigible, droit, rectification, rhesus, 94 more

through Proto-Indo-European *h₃rḗǵs ‘king, ruler’

rich, rani, rajah, eldritch, 6 more

through Proto-Italic *rēks ‘king’

regalia, 4 more

through Latin rēx ‘king, ruler’

real, royal, roy, rex, regal, riel, 5 more

Today it means

noun A subkingdom.

Sources

Sources: Wiktionary, “subregnum”; the older steps come from the Wiktionary entry for Latin subregnum. 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 *h₃reǵ- / subregnum

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