/ Dictionary / Index P precautious: Meaning and Definition of Find definitions for: pre•cau•tious Pronunciation: (pri-kô'shus), [key] — adj. using or displaying precaution: a precautious reply; a precautious person. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. precautionary precava Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language