/ Dictionary / Index I incautious: Meaning and Definition of Find definitions for: in•cau•tious Pronunciation: (in-kô'shus), [key] — adj. not cautious; careless; reckless; heedless. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: incautious (Thesaurus) incaution incendiarism Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language