Ious is defined as having or being like the word it follows.
An example of the –ious suffix is the word luxurious.
- forming adjectives having, characterized by: furious
- forming adjectives corresponding to nouns ending in -ion: rebellious, religious
Origin of -iousfrom -i-, thematic vowel or stem ending + -ous, for French -ieux and Classical Latin -ius
Having; having the qualities of; full of: bilious.
Origin of -iousMiddle English partly from Latin -ius and partly from Old French -ieus, -ieux ( from Latin -iōsus )
- Alternative spelling of -ous.
-i- + -ous
- plural form of IOU