/ Dictionary / Index I incaution: Meaning and Definition of Find definitions for: in•cau•tion Pronunciation: (in-kô'shun), [key] — n. lack of caution; heedlessness; carelessness. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: incaution (Thesaurus) incase incautious 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