-ous

adjective suffix

Definition of -ous

1 : full of : abounding in : having : possessing the qualities of
  • clamorous
  • poisonous
2 : having a valence lower than in compounds or ions named with an adjective ending in -ic
  • mercurous

Origin and Etymology of -ous

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


-OUS Defined for English Language Learners

-ous

Definition of -ous for English Language Learners

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


-OUS Defined for Kids

-ous

adjective suffix \ əs \

Definition of -ous for Students

: full of : having : resembling
  • dangerous
  • poisonous

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