-ous

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See also: ous

English[edit]

Alternative forms[edit]

Etymology[edit]

From Old French -ous and -eux, from Latin -ōsus(full, full of).

Suffix[edit]

-ous

  1. Used to form adjectives from nouns.
    bulb + ‎-ous → ‎bulbous
    courage + ‎-ous → ‎courageous
    joy + ‎-ous → ‎joyous
    poison + ‎-ous → ‎poisonous
    riot + ‎-ous → ‎riotous
  2. (chemistry) Used in chemical nomenclature to name chemical compounds in which a specified chemical element has a lower oxidation number than in the equivalent compound whose name ends in the suffix -ic. For example sulphuric acid (H2SO4) has more oxygen atoms per molecule than sulphurous acid (H2SO3). See Inorganic nomenclature.

Synonyms[edit]

Derived terms[edit]


Related terms[edit]

Translations[edit]

Note - translations of English words ending in -ous do not necessarily end in the suffixes listed below.

See also[edit]


Old French[edit]

Suffix[edit]

-ous

  1. Alternative form of -us