Translation guide
A liquid used to rinse the mouth, often for freshening breath or oral hygiene. In Japanese, the most common word is マウスウォッシュ, but other terms exist depending on the type and purpose.
The learner wants to refer to mouthwash as a product or liquid for oral care, typically used after brushing.
The most common and widely understood loanword for mouthwash. Used in everyday conversation and on product labels.
マウスウォッシュを使うと口の中がさっぱりする。
Using mouthwash leaves your mouth feeling fresh.
A more formal or technical term for mouthwash, often used in medical or dental contexts. Literally 'mouth-rinsing liquid'.
歯科医は洗口液の使用を勧めた。
The dentist recommended using a mouthwash.
Refers specifically to a medicated gargle or mouthwash, often used for sore throats or disinfection. 'うがい' means gargling, and '薬' means medicine.
風邪の予防にうがい薬を使っています。
I use a medicated mouthwash to prevent colds.
A very formal, technical term for oral rinse, seen in medical literature or specialized products. Not used in daily conversation.
この口腔洗浄液は歯周病に効果があります。
This oral rinse is effective for periodontal disease.
The learner wants to refer to mouthwash specifically for freshening breath, often in a social or cosmetic context.
Still the default term, even for cosmetic use. Many Japanese mouthwash brands market themselves as マウスウォッシュ.
デートの前にマウスウォッシュで口臭をケアした。
Before the date, I used mouthwash to take care of bad breath.
Literally 'bad-breath prevention liquid'. Sometimes used on product labels, but less common in speech.
口臭予防液を携帯している。
I carry a breath-freshening mouthwash with me.
The learner wants to express the action of rinsing the mouth, rather than the product.
The standard verb phrase for rinsing one's mouth. Can be used with water or mouthwash.
食後に口をすすいだ。
I rinsed my mouth after eating.
Means 'to gargle' or 'to rinse the mouth', often with a medicated liquid. Slightly more associated with throat gargling.
外から帰ったらうがいをしましょう。
Let's gargle (or rinse our mouths) after coming back from outside.
マウスウォッシュ is the general term for cosmetic or breath-freshening mouthwash. うがい薬 is specifically a medicated gargle, often used for sore throats or disinfection. If you want to buy regular mouthwash at a drugstore, ask for マウスウォッシュ.
マウスウォッシュはどこにありますか？
Where is the mouthwash?
のどが痛いので、うがい薬を買いたいです。
My throat hurts, so I want to buy some medicated gargle.
Many Japanese mouthwashes are labeled as マウスウォッシュ or 洗口液. If you're looking for a non-alcohol type, you can say ノンアルコールのマウスウォッシュ. For children, there are flavored options called 子ども用マウスウォッシュ.