Vocabulary
C2
6 min read
Updated 15 June 2026
Quick Answer
Complacent means smugly self-satisfied and uncritical about oneself; complaisant means willing to please others and easily agreeable.
Complacent and complaisant are near-homophones with a shared Latin root in placere (to please), but their meanings point in different directions. Complacent turns the pleasing inward: a complacent person is pleased with themselves, often to the point of smugness or dangerous overconfidence. Complaisant turns the pleasing outward: a complaisant person is keen to please others and falls in with their wishes. Self-satisfied versus eager to oblige — that single difference separates the pair.
At a Glance: Complacent vs Complaisant
| Word | Part of Speech | Pronunciation | Core Meaning |
|---|
| complacent |
adjective |
/kəmˈpleɪsnt/ |
smugly satisfied with oneself; uncritically pleased |
| complaisant |
adjective |
/kəmˈpleɪznt/ |
eager or willing to please others; obligingly agreeable |
Using “Complacent”
Complacent describes someone who is uncritically satisfied with themselves or a situation, often unaware of risks or shortcomings. It usually carries a negative tone, suggesting smugness or harmful overconfidence.
When to use it
- Smug self-satisfaction: a complacent attitude
- Dangerous overconfidence: complacent about safety
- Uncritical contentment: grow complacent
- Failing to stay alert to risk
- Related words: complacency, complacently
After early success, the team became complacent.
We cannot afford to be complacent about security.
His complacent smile annoyed the examiners.
Years of profit had made the firm complacent.
Do not grow complacent just because sales are good.
Using “Complaisant”
Complaisant describes someone who is eager to please others and readily goes along with their wishes. It is a more formal, slightly old-fashioned word and is generally neutral or mildly negative, hinting at over-agreeableness.
When to use it
- Eager to please: a complaisant host
- Readily agreeable: a complaisant smile
- Obliging and accommodating others
- Sometimes too willing to comply
- Related word: complaisance
The complaisant waiter agreed to every request.
She was too complaisant to refuse the extra work.
A complaisant nod showed he would not object.
He played the complaisant guest all evening.
Their complaisant manner made negotiations easy.
The Key Difference
Ask whether the pleasing points inward or outward. Complacent means pleased with oneself — smug, self-satisfied, often blind to danger. Complaisant means eager to please others — obliging and agreeable. A complacent person relaxes because they think all is well; a complaisant person bends to keep others happy. Self-satisfaction versus willingness to oblige.
Memory Tip
Complacent has a c — think cosy and content with oneself. Complaisant has an s and an ai — think eager assistance, pleasing others. Smug about self equals complacent; eager to please others equals complaisant.
Common Mistakes
The waiter was so complacent that he met every request.
The waiter was so complaisant that he met every request. (eager to please others is complaisant)
Success made the champion complaisant and careless.
Success made the champion complacent and careless. (smug self-satisfaction is complacent)
She was too complacent to say no to her demanding boss.
She was too complaisant to say no to her demanding boss. (over-willing to please is complaisant)
We must not be complaisant about the safety risks.
We must not be complacent about the safety risks. (uncritical contentment is complacent)
Frequently Asked Questions
What is the difference between complacent and complaisant?
Complacent means smugly satisfied with oneself or a situation, often to the point of ignoring risks, and it usually has a negative tone, as in growing complacent about safety. Complaisant means eager to please others and readily agreeable, a more formal and slightly old-fashioned word, as in a complaisant host. Both relate to the Latin placere, to please, but complacent turns that pleasing inward toward the self, while complaisant turns it outward toward others. Self-satisfied versus eager to oblige is the core split.
Are complacent and complaisant pronounced the same?
They are very close and are often near-homophones. Complacent is pronounced /kəmˈpleɪsnt/, with a clear s sound, while complaisant is pronounced /kəmˈpleɪznt/, with a softer z sound in the middle. In rapid speech the two can sound almost identical, which is part of why they are confused. Because the distinction is hard to hear, it is safest to rely on context and meaning rather than sound to decide which word is intended.
Which word means smug or self-satisfied?
Complacent is the word for smug or self-satisfied. It describes someone who is uncritically pleased with themselves or their circumstances and may therefore overlook danger, effort needed, or room for improvement. Phrases like a complacent attitude or complacent about the risks capture this sense of harmful contentment. Complaisant does not mean smug; it means eager to please others, so using complaisant for self-satisfaction would be a mistake.
Is complaisant a positive or negative word?
Complaisant is broadly neutral but can lean mildly negative. On the positive side, it describes someone obliging, accommodating, and pleasant to deal with. On the negative side, it can suggest someone who is too willing to comply, agreeing to things they should resist. The tone depends on context: a complaisant host sounds gracious, while too complaisant to refuse hints at weakness. Overall it describes eagerness to please others rather than smugness about oneself.
Is complaisant an old-fashioned word?
Complaisant is fairly formal and somewhat old-fashioned, appearing more often in literary or historical writing than in everyday speech. Many modern writers would instead use accommodating, obliging, or eager to please. It has not vanished, however, and remains useful when you want a single precise word for someone who readily falls in with others' wishes. Because it is less common, readers sometimes assume it is a misspelling of complacent, which makes the contrast worth knowing.
Can a person be both complacent and complaisant?
In theory yes, since they describe different traits. A person could be complacent, smugly satisfied with their own position, and also complaisant, eager to please those around them. However, the words are not synonyms and should not be swapped. If you mean self-satisfied and unworried, use complacent; if you mean obliging and keen to agree with others, use complaisant. Keeping inward self-satisfaction separate from outward eagerness to please prevents confusion.
What is the noun form of complacent?
The noun form of complacent is complacency, meaning a feeling of smug, uncritical self-satisfaction, as in there is no room for complacency. The noun form of complaisant is complaisance, meaning willingness to please others or obliging agreeableness. The two nouns mirror the adjectives and are just as easily confused, so the same rule applies: complacency is about being pleased with oneself, while complaisance is about being eager to please others.
Why are complacent and complaisant so easily confused?
They are confused because they look almost identical, sound nearly the same, and both trace back to the Latin placere, to please. The crucial difference is direction: complacent is pleasure aimed at the self, producing smugness, while complaisant is pleasure aimed at others, producing eagerness to oblige. Because complaisant is rarer, people often assume any such word must be complacent. The cure is to remember that complaisant has an extra i and an s and means pleasing others.
Which word should I use for ignoring danger?
Use complacent. When someone ignores danger or risk because they are uncritically satisfied that everything is fine, that attitude is complacency and the person is complacent. For example, we became complacent about cyber-security, or do not grow complacent just because the numbers look good. Complaisant would be wrong here, because it describes eagerness to please others, not a false sense of security or smug overconfidence about a situation.
How can I remember which word to use?
Tie each spelling to a hook. Complacent has a c, so picture being cosy and content with yourself, leading to smugness. Complaisant has an s and an extra i, so picture eagerly offering assistance to please others. If the meaning is smug self-satisfaction, choose complacent; if it is eagerness to please and agree, choose complaisant. Ask whether the pleasing points at the self or at other people, and the right word follows.
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