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complacency

American  
[kuhm-pley-suhn-see] / kəmˈpleɪ sən si /
Also complacence

noun

plural

complacencies
  1. 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.

  2. Archaic.

    1. friendly civility; inclination to please; complaisance.

    2. a civil act.


complacency British  
/ kəmˈpleɪsənsɪ /

noun

  1. a feeling of satisfaction, esp extreme self-satisfaction; smugness

  2. an obsolete word for complaisance

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of complacency

From the Medieval Latin word complacentia, dating back to 1635–45. See complacent, -cy

Explanation

The word complacency is often hurled, in a rather scornful manner, at people who are unwilling to be political. It connotes a sense of ease and contentment with the status quo. It is a rare thing to hear the word complacency used in a purely positive way; there's always a sense of scolding to it. At best it's used to convey a person's satisfaction: "Oh? No one asked you to the prom? I've been asked three times," she said with complacency. More commonly, however, it takes on a political tone, as with large bodies of people who are unwilling to protest corruption because it doesn't touch them: "He preached and argued, but it was impossible to jostle the students from their complacency."

Keep Reading on Vocabulary.com

Vocabulary lists containing complacency

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Complacency is widespread among sophisticated institutional investors who should know better, too.

From MarketWatch • Jan. 14, 2026

Complacency for him was unthinkable when a majority of his fellow citizens were denied their fundamental liberties.

From Los Angeles Times • Mar. 10, 2025

Complacency would be misguided, as illustrated by the current mpox outbreak that is gathering steam.

From Salon • Aug. 16, 2024

Complacency set in and was followed by panic.

From BBC • Feb. 3, 2024

Complacency shone over the speaker's shrivelled cheeks, and beamed from his horn-spectacles.

From The Delectable Duchy by Quiller-Couch, Arthur Thomas, Sir