TOEIC Link Part 5: complacent versus complaisant

Complacent and complaisant are separated by a single vowel and sound almost identical when spoken, but they describe very different attitudes. Complacent means smugly self-satisfied and unworried, usually in a way that is criticized. Complaisant means eager to please and willing to go along with others. Because business passages describe both overconfident teams and accommodating colleagues, Part 5 can deploy either word and trust the careless reader to pick by sound. For another pair of confusable adjectives, see loath versus loathe, and for a meaning-based trap, see disinterested versus uninterested.

The core rule: self-satisfied versus eager to please

• complacent (adjective) = smugly content, unworried to a fault: After three strong quarters, the team grew complacent and stopped innovating.
• complaisant (adjective) = eager to please, agreeable: The new account manager was complaisant, always willing to adjust to the client's requests.

A memory hook: complacent contains a c, like content and comfortable — it is about being comfortable with yourself. Complaisant contains an i and shares its root with please (think of the French plaire, to please) — it is about pleasing others.

Why Part 5 likes this pair

The two words pull a sentence in opposite directions. Complacent almost always carries a negative judgment: it warns that someone has stopped trying because they feel safe. Complaisant is neutral to positive: it describes someone cooperative and obliging. So the surrounding context — whether the sentence is criticizing inaction or describing helpfulness — tells you which word fits.

The company became complacent about its market lead and was overtaken within a year.

Here the sentence describes danger born of overconfidence, so complacent is correct. Swap in complaisant and the sentence collapses: being "agreeable about a market lead" makes no sense.

Because she was so complaisant, she rarely pushed back, even when the deadline was unrealistic.

Here the clue is rarely pushed back — a description of agreeableness, so complaisant fits.

Spotting the clue word

Look for the attitude the sentence is rewarding or punishing:

• Words like overconfident, lazy, stopped trying, took success for granted point to complacent.
• Words like accommodating, agreeable, willing, eager to help, obliging point to complaisant.

If the sentence is a warning about resting on past success, choose complacent. If it describes someone bending to others' wishes, choose complaisant.

A note on a third lookalike

You may also meet complaisance and complacency as nouns, and they keep the same split: complacency is dangerous self-satisfaction, while complaisance is a disposition to please. The vowel that distinguishes the adjectives distinguishes the nouns too. For more on noun-versus-adjective form traps, see adverse versus averse.

Quick self-check

Choose the right word:

1. Investors warned that the firm had grown dangerously __ about its declining sales. (complacent — the clue is dangerously and declining, a warning about overconfidence)
2. A __ host, he agreed to every change his guests proposed. (complaisant — the clue is agreed to every change, describing eagerness to please)

Takeaway

Complacent = smug and unworried, almost always a criticism. Complaisant = eager to please and agreeable, usually neutral or positive. Anchor complacent to being comfortable with yourself, and complaisant to the idea of pleasing others. Once you read the sentence for whether it is warning about overconfidence or describing helpfulness, the single-vowel trap disappears.