definitions

-itious

a compound suffix occurring in adjectives of Latin origin (adventitious) and with adjectives, formed in Latin or English, associated with nouns ending in -ition (ambitious; expeditious).Compare -ite2, -ous.

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English Affixes From A To Z: A One-Stop List Of Suffixes, Prefixes, and Combining FormsIn English, we love to make new words by adding all sorts of bits to the front and back of existing terms. These are called affixes, and they are added to the base or stem of a word. When attached to the end of word, the affix is called a suffix. And to the beginning? A prefix.
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Nearby words

-istical, -istics, -ite, -itic, -ition, -itious, -itis, -itive, -itol, -ity, -ium

Origin of -itious

< Latin -icius or -īcius (as in adventitious); and < Latin -itiōsusor -ītiōsus (as in ambitious)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for -itious

-itious

suffix forming adjectives

having the nature of; characterized bynutritious; suppositious

Word Origin for -itious

from Latin -icius, -itious
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012