English
coactivity
Coactivity comes from Middle French activité, from Latin āctīvitās ‘activity, movement, action’, and ultimately from Proto-Indo-European *h₂eǵ-.
- Proto-Indo-Europeanc. 4500–2500 BCE*h₂eǵ-1reconstructed
- Proto-Indo-Europeanc. 4500–2500 BCE*h₂éǵeti1‘to be driving’reconstructed
- Proto-Italicc. 1500–700 BCE*agō1‘to drive’reconstructed
- Latinc. 75 BCE–200 CEagō1‘to act, to behave’
- Latinc. 75 BCE–200 CEāctīvus1‘active’
- Latinc. 75 BCE–200 CEāctīvitās1‘activity, movement, action’
- Middle Frenchc. 1400–1600activité1
- English1500–presentactivity1
- Englishearliest quotation 2001coactivity1
attested reconstructed ? uncertain or disputed deepest recorded ancestor
- 1 Wiktionary, English coactivity
- Earliest quotation in Wiktionary’s entry: 2001, Thomas F. Torrance, Christian Doctrine of God: “This may be called the 'perichoretic coactivity of the…”.
Lineage
- Proto-Indo-Europeanc. 4500–2500 BCE*h₂eǵ-Wiktionary, English coactivityreconstructed
- Proto-Indo-Europeanc. 4500–2500 BCE*h₂éǵetiWiktionary, English coactivity‘to be driving’reconstructed
- Proto-Italicc. 1500–700 BCE*agōWiktionary, English coactivity‘to drive’reconstructed
- Latinc. 75 BCE–200 CEagōWiktionary, English coactivity‘to act, to behave’
- Latinc. 75 BCE–200 CEāctīvusWiktionary, English coactivity‘active’
- Latinc. 75 BCE–200 CEāctīvitāsWiktionary, English coactivity‘activity, movement, action’
- Middle Frenchc. 1400–1600activitéWiktionary, English coactivity
- English1500–presentactivityWiktionary, English coactivity
- Englishearliest quotation 2001coactivityWiktionary, English coactivity. Earliest quotation in Wiktionary’s entry: 2001, Thomas F. Torrance, Christian Doctrine of God: “This may be called the 'perichoretic coactivity of the…”
Linked words
through Proto-Indo-European *h₂eǵ-
suggest, register, essay, gesture, acre, digest, congestion, agrarian, belligerent, progesterone, gestation, ingestion, ingest, agitate, axiomatic, agger, samaj, gerund, gestion, 127 more
through Proto-Indo-European *h₂éǵeti ‘to be driving’
strategy, agony, antagonist, axiom, reactionary, antagonism, agonist, antagonize, stratagem, glucagon, agonize, 101 more
through Proto-Italic *agō ‘to drive’
reaction, transaction, unambiguous, reagent, ambiguously, 79 more
through Latin agō ‘to act, to behave’
agency, act, agent, action, actual, agenda, actor, examine, examination, actively, ambiguous, squat, agile, assay, radioactive, ambiguity, enact, inactive, agility, agitation, cogent, actuator, retroactive, exigent, actuation, inexact, actuate, redact, 91 more
through Latin āctīvus ‘active’
active, activate, radium, 27 more
through English activity
Today it means
noun Acting together or in harmony; unity or interdependence of action.
Sources
Sources: Wiktionary, “coactivity”. 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 *h₂eǵ- / coactivity