Word.ws English Dictionary

-acious

-acious suffix: used to form adjectives from nouns and verb stems.

Suffix

-acious

  1. Used to form adjectives from nouns and verb stems.
    • audacity → audacious
    • sage → sagacious

Origin of -acious

From (1) -aci(ty) + -ous and (2) from Old French -acieux, both ultimately from Latin -ācitās.

Questions about -acious

What does -acious mean?
-acious means used to form adjectives from nouns and verb stems.
What part of speech is -acious?
-acious is a suffix.

Words near -acious in the dictionary

  1. -ably
  2. -aboo
  3. -ac
  4. -acal
  5. -aceous
  6. -acious
  7. -acity
  8. -acusis
  9. -acy
  10. -ad
  11. -ade

Source and license

Adapted from Wiktionary: -acious (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “-acious.” Word.ws, https://word.ws/-acious. Based on Wiktionary, CC BY-SA 4.0.