insect (English)

Where does "insect" come from?

The English noun 'insect' was borrowed from Middle French 'insecte'[1]. This French term traces back to Latin 'īnsectum', which itself is a calque of the Ancient Greek word 'ἔντομον'[1]. The Latin form derives from the participle 'īnsectus', meaning 'cut into' or 'cut up', stemming from the verb 'īnsecō', a combination of the prefix 'in-' and 'secō' meaning 'I cut'[1]. This etymology reflects the ancient notion that the creature has a body cut into distinct sections[1]. Ultimately, the Latin verb 'secō' goes back to the Proto-Indo-European root '*sek-' meaning 'to cut'[6].

Open questions

• The ultimate derivation of the root involves the reconstructed Proto-Indo-European form '*sek-'. [6]

Full etymology tree

• insect (English), 'An arthropod (in the Insecta class) characterized by six legs, up to four wings, and a chitinous exoskeleton.'
  • borrowed insecte (Middle French)
    • inherited insectum (Latin), 'inflection of īnsectus:'
      • calque ἔντομον (éntomon) (Ancient Greek), 'insect'
        • derived ἔντομος (éntomos) (Ancient Greek), 'cut in pieces, cut up'
          • compound ἐν- (en-) (Ancient Greek), 'in-'
          • compound τόμος (tómos) (Ancient Greek), 'slice, piece'
      • derived insectus (Latin), 'cut up or into, having been cut up or into; incised, dissected'
        • deverbal inseco (Latin), 'to cut up or into'
          • prefix in- (Latin), 'un-, non-, not'
          • derived seco (Latin), 'to cut, cut off'
            • inherited *sekaō (Proto-Italic), 'to cut'
              • inherited *sek- (Proto-Indo-European), 'to cut, cut off, sever'

Ancestors

• *sek- (Proto-Indo-European)
• insectum (Latin)
• ἔντομον (Ancient Greek)

Descendants and derived words

• အင်းဆက် (Burmese)
• angel insect (English)
• antiinsect (English)
• beneficial insect (English)
• coral insect (English)
• deinsectization (English)
• disinsect (English)
• fig insect (English)
• ghost insect (English)
• insectageddon (English)
• insectan (English)
• insectarium (English)

Sources

1. insect (English) - Wiktionary
2. insectum (Latin) - Wiktionary
3. ἔντομον (éntomon) (Ancient Greek) - Wiktionary
4. inseco (Latin) - Wiktionary
5. ἔντομος (éntomos) (Ancient Greek) - Wiktionary
6. seco (Latin) - Wiktionary
7. insectus (Latin) - Wiktionary

Updated August 2026

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Etymology data from Wiktionary, CC BY-SA 4.0 · About Miraris