Etymology Explorer › English

Where does “-ious” come from?

-ious (English) comes from Latin -ius, from Proto-Italic -jōs, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

-ious (English): Alternative spelling of -ous; "forming...

Definitions

  1. Alternative spelling of -ous; "forming...

Ancestry of “-ious”, step by step

StepLanguageWordMeaning
1Latin-iusforming adjectives from nouns; nominative neuter...
2Proto-Italic-jōsForms comparative adjectives
3Proto-Indo-European-yósCreates adjectives from noun or verb stems

Words derived from “-ious”

  • atrocious
  • auspicious
  • ostentatious
  • ostentatiously
  • parsimonious
  • inauspicious
  • uproarious
  • unostentatious
  • uproariously
  • tendentious
  • rambunctious
  • auspiciously
  • atrociously
  • unostentatiously
  • auspiciousness
  • parsimoniously
  • inauspiciously
  • burglarious
  • tendentiously
  • robustious
  • rumbustious
  • tendentiousness
  • symphonious
  • atrociousness
Every word from Proto-Indo-European -yós →