Etymograph

English

insect

Insect comes from Latin īnsectus ‘cut into, cut up, with a notched or divided body’, and goes back to Proto-Indo-European *sek-.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sek-1‘to cut’reconstructed
  2. Proto-Italicc. 1500–700 BCE*sekaō1‘to cut’reconstructed
  3. Latinc. 75 BCE–200 CEsecō2‘to cut’
  4. Latinc. 75 BCE–200 CEīnsecō2‘to cut into, to cut up’
  5. Latinc. 75 BCE–200 CEīnsectus2‘cut into, cut up, with a notched or divided body’perfect passive participle of īnsecō
  6. Latinc. 75 BCE–200 CEīnsectum2
  7. Middle Frenchc. 1400–1600insecte2
  8. Englishearliest quotation 1756insect2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin seco
  2. 2 Wiktionary, English insect
  3. Earliest quotation in Wiktionary’s entry: 1756, Samuel Johnson, To Which Are Prefixed: “Ambroſe Parey has a picture of the ſalamander, with…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sek-Wiktionary, Latin seco‘to cut’reconstructed
  2. Proto-Italicc. 1500–700 BCE*sekaōWiktionary, Latin seco‘to cut’reconstructed
  3. Latinc. 75 BCE–200 CEsecōWiktionary, English insect‘to cut’
  4. Latinc. 75 BCE–200 CEīnsecōWiktionary, English insect‘to cut into, to cut up’
  5. Latinc. 75 BCE–200 CEīnsectusWiktionary, English insect‘cut into, cut up, with a notched or divided body’perfect passive participle of īnsecō
  6. Latinc. 75 BCE–200 CEīnsectumWiktionary, English insect
  7. Middle Frenchc. 1400–1600insecteWiktionary, English insect
  8. Englishearliest quotation 1756insectWiktionary, English insect. Earliest quotation in Wiktionary’s entry: 1756, Samuel Johnson, To Which Are Prefixed: “Ambroſe Parey has a picture of the ſalamander, with…”

Linked words

through Proto-Indo-European *sek- ‘to cut’

saw, design, sign, ship, seal, sack, scarlet, sawyer, sax, scythe, shingle, sich, sigil, desiccation, sedge, desiccant, sain, 59 more

through Proto-Italic *sekaō ‘to cut’

sexuality, homosexual, dissection, 18 more

through Latin secō ‘to cut’

risk, sex, sexual, section, segment, sickle, het, dissect, brassica, seg, 21 more

Today it means

noun An arthropod (in the Insecta class) characterized by six legs, up to four wings, and a chitinous exoskeleton.

Sources

Sources: Wiktionary, “insect”; the older steps come from the Wiktionary entry for Latin seco. 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 *sek- / insect

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