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Definition of -ous suffix from the Oxford Advanced Learner's Dictionary

-ous

suffix
 
/əs/
 
/əs/
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  1. (in adjectives) having the nature or quality of
    • poisonous
    • mountainous
    Word Originfrom Anglo-Norman French, or Old French -eus, from Latin -osus.
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See -ous in the Oxford Advanced American Dictionary
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elaborate
adjective
 
 
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