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 History of this Word

"ous" is from "osus" (full) spoken by ancient people in central Italy around 700 B.C.

Notes

In this sense, it is a word added to another word to form a new word.

More words with this suffix,
virtuous
courageous
ambidextrous
chromous

Words related to this meaning

grammar is modifier

"-ous" is a type of suffix

Definition

A word ending that indicates full of or lower chemical valence. Created by people to expand meaning of words. Can be added to the end of many words.

Examples of how the word is used

-ous illustration Love is a joyous and wondrous emotion.
-ous illustration We are interested in buying non-ferrous scrap.