Translation guide
The English word "precaution" refers to an action taken in advance to prevent something dangerous or unpleasant from happening. In Japanese, this concept is expressed through several nouns and verbs, depending on whether you are talking about preventive measures, being careful, or guarding against something.
An action or measure taken to prevent something bad from happening.
A common, neutral term for a preventive measure or precautionary step, often used in medical, safety, or general contexts.
インフルエンザの予防策として手洗いが大切です。
Hand washing is important as a precaution against the flu.
Refers to caution or taking care against danger. Often used in the phrase 用心のために (as a precaution).
用心のために傘を持っていきます。
I'll take an umbrella as a precaution.
Means countermeasure or measure. Often used for planned actions against specific problems, like disaster prevention.
地震対策をしっかり行う必要がある。
We need to take thorough precautions against earthquakes.
Preparation or provision against future contingencies. Often used in the phrase 備えあれば憂いなし (if you are prepared, you have nothing to worry about).
災害への備えを怠ってはいけない。
We must not neglect precautions against disasters.
Vigilance or alertness, often used for security or weather warnings. Implies being on guard.
台風に警戒してください。
Please take precautions against the typhoon.
The state or act of being cautious to avoid danger or mistakes.
Care, attention, or caution. Used in warnings and advice. 注意する means to be careful or to take care.
足元に注意してください。
Please watch your step. (Take precaution about your footing.)
Cautiousness or wariness. A noun describing the quality of being careful.
彼は用心深さから、契約書をよく読んだ。
Out of precaution, he read the contract carefully.
Prudence or carefulness. Often used as an adjective (慎重な) or adverb (慎重に).
A measure specifically for ensuring safety.
Safety measures or precautions. A compound of 安全 (safety) and 対策 (measures).
工事現場では安全対策が徹底されている。
Safety precautions are thoroughly implemented at the construction site.
Safety measure or precaution. Similar to 安全対策 but slightly less formal.
Adverbial phrase meaning 'just in case' or 'to be on the safe side'.
A very common phrase meaning 'just in case' or 'as a precaution'. Used when you do something extra to be safe.
念のため、もう一度確認します。
I'll check again as a precaution.
Literally 'for the sake of caution'. Used similarly to 念のため but slightly more formal or written.
用心のため、戸締まりを確認した。
As a precaution, I checked that the doors were locked.
Means 'in preparation for the worst' or 'just in case'. More emphatic about unlikely events.
万一に備えて、非常食を用意した。
As a precaution, I prepared emergency food.
予防策 (yobousaku) specifically means preventive measures, while 対策 (taisaku) is a broader term for countermeasures that can be reactive as well. Use 予防策 when emphasizing prevention before something happens.
English 'precaution' is often used in phrases like 'take precautions'. In Japanese, it's more natural to use specific verbs like 注意する (to be careful), 備える (to prepare), or 対策をとる (to take measures) rather than a single noun.
慎重に行動してください。
Please act with precaution.
安全策を講じる必要がある。
We need to take safety precautions.