Etymograph

English

inseparable

Inseparable comes from Latin īnsēparābilis, from sēparābilis ‘separable’, and ultimately from Proto-Indo-European *pr̥h₃o-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*pr̥h₃o-1reconstructed
  2. Latinc. 75 BCE–200 CE*paro-1reconstructed
  3. Latinc. 75 BCE–200 CEparō1‘to arrange’
  4. Latinc. 75 BCE–200 CEsēparō2‘to divide, separate’
  5. Latinc. 75 BCE–200 CEsēparābilis3‘separable’
  6. Latinc. 75 BCE–200 CEīnsēparābilis4
  7. Middle Frenchc. 1400–1600inséparable4
  8. Englishearliest quotation 1874inseparable4

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin separo
  2. 2 Wiktionary, Latin separabilis
  3. 3 Wiktionary, Latin inseparabilis
  4. 4 Wiktionary, English inseparable
  5. Earliest quotation in Wiktionary’s entry: 1874, Thomas Hardy, Coming Home—A Cry: “People of unalterable ideas still insisted upon calling him…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*pr̥h₃o-Wiktionary, Latin separoreconstructed
  2. Latinc. 75 BCE–200 CE*paro-Wiktionary, Latin separoreconstructed
  3. Latinc. 75 BCE–200 CEparōWiktionary, Latin separo‘to arrange’
  4. Latinc. 75 BCE–200 CEsēparōWiktionary, Latin separabilis‘to divide, separate’
  5. Latinc. 75 BCE–200 CEsēparābilisWiktionary, Latin inseparabilis‘separable’
  6. Latinc. 75 BCE–200 CEīnsēparābilisWiktionary, English inseparable
  7. Middle Frenchc. 1400–1600inséparableWiktionary, English inseparable
  8. Englishearliest quotation 1874inseparableWiktionary, English inseparable. Earliest quotation in Wiktionary’s entry: 1874, Thomas Hardy, Coming Home—A Cry: “People of unalterable ideas still insisted upon calling him…”

The story

Constructed as in- + separable.

Full etymology on Wiktionary

Linked words

through Latin parō ‘to arrange’

empire, emperor, imperial, repair, preparation, empress, apparel, apparatus, parachute, preparatory, disparate, imperium, imperious, pare, rampart, imperator, reparation, 16 more

through Latin sēparō ‘to divide, separate’

several, separate, separation, severance, separator, 2 more

Today it means

adj Unable to be separated; bound together permanently.

Sources

Sources: Wiktionary, “inseparable”; the older steps come from the Wiktionary entries for Latin separo, Latin separabilis, Latin inseparabilis. 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 *pr̥h₃o- / inseparable

Shirt and support for this word