Etymograph

English

insensate

Insensate comes from Latin īnsēnsātus ‘irrational’, from sensātus ‘sensible, intelligent, gifted with sense’, and ultimately from Proto-Indo-European *sent- ‘to perceive’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sent-1‘to perceive’reconstructed
  2. Proto-Italicc. 1500–700 BCE*sentiō1‘to feel, to sense, to perceive’reconstructed
  3. Latinc. 75 BCE–200 CEsentiō1‘feel, hear, see, perceive’
  4. Latinc. 75 BCE–200 CEsēnsus2‘faculty of sensation’
  5. Latinc. 75 BCE–200 CEsensātus3‘sensible, intelligent, gifted with sense’
  6. Latinc. 75 BCE–200 CEīnsēnsātus3‘irrational’
  7. Englishearliest quotation 1816insensate3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin sensus
  2. 2 Wiktionary, Latin sensatus
  3. 3 Wiktionary, English insensate
  4. Earliest quotation in Wiktionary’s entry: 1816, Lord Byron: “Since thus divided — equal must it be If…”.

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sent-Wiktionary, Latin sensus‘to perceive’reconstructed
  2. Proto-Italicc. 1500–700 BCE*sentiōWiktionary, Latin sensus‘to feel, to sense, to perceive’reconstructed
  3. Latinc. 75 BCE–200 CEsentiōWiktionary, Latin sensus‘feel, hear, see, perceive’
  4. Latinc. 75 BCE–200 CEsēnsusWiktionary, Latin sensatus‘faculty of sensation’
  5. Latinc. 75 BCE–200 CEsensātusWiktionary, English insensate‘sensible, intelligent, gifted with sense’
  6. Latinc. 75 BCE–200 CEīnsēnsātusWiktionary, English insensate‘irrational’
  7. Englishearliest quotation 1816insensateWiktionary, English insensate. Earliest quotation in Wiktionary’s entry: 1816, Lord Byron: “Since thus divided — equal must it be If…”

Linked words

through Proto-Indo-European *sent- ‘to perceive’

send, sith, 30 more

through Latin sentiō ‘feel, hear, see, perceive’

sentence, sensitive, consent, sentiment, scent, consensus, sensible, sensor, resent, senseless, sensibility, sentient, assent, sentience, antisense, 29 more

through Latin sēnsus ‘faculty of sensation’

sense, sensation, sensual, sensuous, sensu, 18 more

Today it means

adj Having no sensation or consciousness; unconscious; inanimate.

Sources

Sources: Wiktionary, “insensate”; the older steps come from the Wiktionary entries for Latin sensus, Latin sensatus. 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 *sent- / insensate

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