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Meaning of -eous

-eous

Pronunciation: [key]
  1. an adjectival suffix with the meanings “composed of,” “resembling, having the nature of,” occurring in loanwords from Latin (igneous; ligneous; vitreous); also, as a semantically neutral suffix, found on adjectives of diverse origin, sometimes with corresponding nouns ending in (beauteous; courteous; hideous; homogeneous; plenteous; righteous).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.