/ Dictionary / Index C complacency: Meaning and Definition of Find definitions for: com•pla•cen•cy Pronunciation: (kum-plā'sun-sē), [key] — pl. -cies. a feeling of quiet pleasure or security, often while unaware of some potential danger, defect, or the like; self-satisfaction or smug satisfaction with an existing situation, condition, etc. friendly civility; inclination to please; complaisance. a civil act. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: complacency (Thesaurus) compiler complacent Related Content Daily Word Quiz: immense Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language