Etymograph

English

assecure

Assecure comes from Latin assecurare ‘assure’, from sēcūrus ‘safe, secure’, and ultimately from Proto-Indo-European *kʷeys- ‘to see’.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kʷeys-1‘to see’reconstructed
  2. Proto-Italicc. 1500–700 BCE*kʷoizā1‘care’reconstructed
  3. Latinc. 75 BCE–200 CEcūra1‘care’
  4. Latinc. 75 BCE–200 CEsēcūrus2‘safe, secure’
  5. Latinc. 75 BCE–200 CEassecurare3‘assure’
  6. Englishtodayassecure3

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin securus
  2. 2 Wiktionary, Latin assecurare
  3. 3 Wiktionary, English assecure

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*kʷeys-Wiktionary, Latin securus‘to see’reconstructed
  2. Proto-Italicc. 1500–700 BCE*kʷoizāWiktionary, Latin securus‘care’reconstructed
  3. Latinc. 75 BCE–200 CEcūraWiktionary, Latin securus‘care’
  4. Latinc. 75 BCE–200 CEsēcūrusWiktionary, Latin assecurare‘safe, secure’
  5. Latinc. 75 BCE–200 CEassecurareWiktionary, English assecure‘assure’
  6. EnglishtodayassecureWiktionary, English assecure

Linked words

through Proto-Indo-European *kʷeys- ‘to see’

shire, curate, 5 more

through Proto-Italic *kʷoizā ‘care’

procurator, 5 more

through Latin cūra ‘care’

ensure, proxy, assure, procurement, curator, insure, incurable, manicure, curation, 7 more

through Latin sēcūrus ‘safe, secure’

sure, security, sicker, 5 more

Today it means

verb To make safe or sure; to assure.

Sources

Sources: Wiktionary, “assecure”; the older steps come from the Wiktionary entries for Latin securus, Latin assecurare. 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 *kʷeys- / assecure

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