-ous

adjective suffix

: full of : having a large amount of : having the quality of

Full Definition of -OUS

: full of : abounding in : having : possessing the qualities of <clamorous> <poisonous>

: having a valence lower than in compounds or ions named with an adjective ending in -ic <mercurous>

Middle English, from Anglo-French -us, -ous, from Latin -osus

-OUS Defined for Kids

adjective suffix \əs\

: full of : having : resembling <dangerous> <poisonous>

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