Etymograph

English

concurrent

Concurrent comes from Latin concurrēns ‘concurring’, from concurrō ‘happen at the same time’, and ultimately from Proto-Indo-European *ḱers- ‘to run’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*ḱers-1‘to run’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*ḱr̥s-é-ti1reconstructed
  3. Proto-Italicc. 1500–700 BCE*korzō1‘to run’reconstructed
  4. Latinc. 75 BCE–200 CEcurrō2‘run’
  5. Latinc. 75 BCE–200 CEconcurrō2‘happen at the same time’
  6. Latinc. 75 BCE–200 CEconcurrēns2‘concurring’present active participle of concurrō
  7. Old Frenchc. 842–1400concurrent2
  8. Middle Englishc. 1150–1500concurrent2
  9. Englishearliest quotation 1601concurrent2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin curro
  2. 2 Wiktionary, English concurrent
  3. Earliest quotation in Wiktionary’s entry: 1601, Caius Plinius Secundus [i.e., (please specify |book=I to XXXVII): “Menander […] had no concurrent in his time that…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*ḱers-Wiktionary, Latin curro‘to run’reconstructed
  2. Proto-Indo-Europeanc. 4500–2500 BCE*ḱr̥s-é-tiWiktionary, Latin curroreconstructed
  3. Proto-Italicc. 1500–700 BCE*korzōWiktionary, Latin curro‘to run’reconstructed
  4. Latinc. 75 BCE–200 CEcurrōWiktionary, English concurrent‘run’
  5. Latinc. 75 BCE–200 CEconcurrōWiktionary, English concurrent‘happen at the same time’
  6. Latinc. 75 BCE–200 CEconcurrēnsWiktionary, English concurrent‘concurring’present active participle of concurrō
  7. Old Frenchc. 842–1400concurrentWiktionary, English concurrent
  8. Middle Englishc. 1150–1500concurrentWiktionary, English concurrent
  9. Englishearliest quotation 1601concurrentWiktionary, English concurrent. Earliest quotation in Wiktionary’s entry: 1601, Caius Plinius Secundus [i.e., (please specify |book=I to XXXVII): “Menander […] had no concurrent in his time that…”

Linked words

through Proto-Indo-European *ḱers- ‘to run’

charge, career, carry, rush, cargo, carrier, hurry, carriage, chariot, intercourse, carousel, occurrence, caricature, recourse, 41 more

through Proto-Italic *korzō ‘to run’

corridor, discourse, courier, 23 more

through Latin currō ‘run’

course, occur, curriculum, currency, precursor, incur, recurrent, 30 more

through Latin concurrō ‘happen at the same time’

3 more

Today it means

adj Happening at the same time; simultaneous.

Sources

Sources: Wiktionary, “concurrent”; the older steps come from the Wiktionary entry for Latin curro. 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 *ḱers- / concurrent

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