-ous

American  

1. a suffix forming adjectives that have the general sense “possessing, full of ” a given quality (covetous; glorious; nervous; wondrous ); -ous and its variant -ious have often been used to Anglicize Latin adjectives with terminations that cannot be directly adapted into English (atrocious; contiguous; garrulous; obvious; stupendous ). As an adjective-forming suffix of neutral value, it regularly Anglicizes Greek and Latin adjectives derived without suffix from nouns and verbs; many such formations are productive combining forms in English, sometimes with a corresponding nominal combining form that has no suffix;

2. a suffix forming adjectival correspondents to the names of chemical elements; specialized, in opposition to like adjectives ending in -ic, to mean the lower of two possible valences (stannous chloride, SnCl 2 , and stannic chloride SnCl4 ).

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-ous British  

suffix

1. having, full of, or characterized by

   dangerous

   spacious

   languorous

2. (in chemistry) indicating that an element is chemically combined in the lower of two possible valency states Compare -ic

   ferrous

   stannous

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Etymology

Origin of -ous

Middle English < Anglo-French, Old French < Latin -ōsus; a doublet of -ose ¹

Example Sentences

This is like the above. vièi, old. vièiour, old age. -ous, -ouso.

From Frédéric Mistral Poet and Leader in Provence by Downer, Charles Alfred

Biramose -ous: having two branches or doubled appendages.

From Explanation of Terms Used in Entomology by Smith, John. B.

Monotrocha -ous: Hymenoptera in which the trochanters are single: having legs in which the trochanter is one-jointed.

From Explanation of Terms Used in Entomology by Smith, John. B.

Bisetose -ous: with two bristle-like or setaceous appendages.

From Explanation of Terms Used in Entomology by Smith, John. B.

From the following words make new words by means of the suffix -ous: joy, grace, grief, glory, desire, virtue, beauty, courage, disaster, harmony.

From De La Salle Fifth Reader by Christian Brothers