Etymograph

English

curiosum

Curiosum comes from Latin cūriōsus ‘Careful, diligent, thoughtful, devoted’, and goes back to incūriōsus ‘careless, negligent’.

  1. Latinc. 75 BCE–200 CEincūriōsus1‘careless, negligent’
  2. Latinc. 75 BCE–200 CEcūriōsus2as cūriōsum‘Careful, diligent, thoughtful, devoted’
  3. Englishtodaycuriosum2

attested reconstructed ? uncertain or disputed deepest recorded ancestor

  1. 1 Wiktionary, Latin curiosus
  2. 2 Wiktionary, English curiosum

Lineage

  1. Latinc. 75 BCE–200 CEincūriōsusWiktionary, Latin curiosus‘careless, negligent’
  2. Latinc. 75 BCE–200 CEcūriōsusWiktionary, English curiosumas cūriōsum‘Careful, diligent, thoughtful, devoted’
  3. EnglishtodaycuriosumWiktionary, English curiosum

Every English word from Latin incūriōsus

Today it means

noun A possibly unimportant point of interest; a curiosity.

Sources

Sources: Wiktionary, “curiosum”; the older steps come from the Wiktionary entry for Latin curiosus. 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 / Latin incūriōsus / curiosum

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