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-acious

American  

  1. a suffix forming adjectives that correspond to nouns ending in the suffixes -acity and -acy: audacious; fallacious .

Etymology

Origin of -acious

< Latin -āci- (stem of -āx ) adj. suffix + -ous

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.