Cool MateCaution vs Precaution
When to use each in English, with meaning, register, and examples.
Caution
Top 2,000 (common)C1noun
Precaution
FormalTop 5,000 (fairly common)C1noun
Most formal: PrecautionMost common: Caution
| Caution | Precaution | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/ˈkɔːʃn/"]/🇺🇸 /["/ˈkɔːʃn/"]/ | 🇬🇧 //prɪˈkɔːʃən//🇺🇸 //prɪˈkɔʃən// |
| Meaning | Be careful. | A measure taken in advance to prevent something bad. |
| Example | Caution is advised when driving in heavy rain. | Taking a precaution is essential when climbing a mountain. |
| Register | Neutral | Formal |
| How common | Top 2,000 (common) | Top 5,000 (fairly common) |
| CEFR level | C1 | C1 |
| Part of speech | noun | noun |
| Collocations | considerable, extra, extreme, exercise, take, use, with caution, err on the side of caution, the need for caution, sound a note of caution, formal, get off with, receive, give somebody | take precautions, safety precautions, precautionary measures |
| Antonyms | carelessness, recklessness | risk, danger |
| Common mistakes | Confused with 'cause' — learners may use 'caution' incorrectly as a reason., Using 'caution' as a verb — 'caution' is primarily a noun., Incorrectly spelling 'caution' as 'cautiont'. | Confusing with 'precautionary', which is an adjective., Using in informal contexts, where 'safety measure' may be more appropriate. |
| Usage notes | Use 'caution' when advising someone to be careful. It is appropriate in both spoken and written contexts, but can sound slightly formal in casual conversations. | Often used in health, safety, and planning contexts. Appropriate in both written and spoken formal settings. Avoid casual conversations. |
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Frequently asked questions: Caution vs Precaution
What's the difference between Caution and Precaution?
Caution: Be careful. Precaution: A measure taken in advance to prevent something bad.
Which is more formal: Caution and Precaution?
Precaution is the most formal of these.
Which is more common: Caution and Precaution?
Caution is the most common in everyday English.
Are Caution and Precaution the same CEFR level?
Caution: C1, Precaution: C1 on the CEFR scale.
Can I use Caution and Precaution interchangeably?
Not always. Caution and Precaution are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.