麻酔（ますい、masui）
- anesthesia

The Japanese word 麻酔 (読み方: ますい - *masui*) means "anesthesia" or "anesthetic." It refers to the state of being insensitive to pain, usually induced by medication, during a medical procedure. It can also refer to the medications or techniques used to achieve this state. 麻酔 aims to provide a pain-free experience for patients undergoing surgery or other uncomfortable medical examinations.

⚫︎手術前に麻酔をかけます。 Translation: "Anesthesia will be administered before the surgery." ⚫︎歯医者で麻酔をしてもらった。 Translation: "I had anesthesia at the dentist." ⚫︎局所麻酔で手術を受けました。 Translation: "I had surgery with local anesthesia."

You use 麻酔 in situations involving medical procedures where pain management is necessary. ⚫︎When discussing surgery, dental work, or other medical interventions. ⚫︎When talking about the type of anesthetic used (e.g., local, general). ⚫︎When explaining a patient's experience during a procedure.

⚫︎The word is primarily written using kanji: 麻酔 ⚫︎The reading is ますい, written in hiragana. ⚫︎There is only one way to write it in general.

There aren't many direct synonyms for 麻酔 in Japanese. The closest would be terms that describe the specific type of anesthetic: ⚫︎全身麻酔 (ぜんしんますい - *zenshin masui*): General anesthesia ⚫︎局所麻酔 (きょくしょますい - *kyokusho masui*): Local anesthesia

The opposite of being under 麻酔 would be being conscious or feeling pain. There is not a direct opposite word, but you could describe a state without 麻酔. ⚫︎意識がある (*ishiki ga aru*): To be conscious. ⚫︎痛みを感じる (*itami o kanjiru*): To feel pain.

医者は患者に麻酔について説明した。 ・Translation: The doctor explained about the anesthesia to the patient. ・Explanation: This sentence illustrates the use of 麻酔 in a medical context, where a doctor is providing information to a patient.

その手術は、全身麻酔で行われました。 ・Translation: That surgery was performed under general anesthesia. ・Explanation: This example specifies the type of anesthesia used, indicating the scope of the word's usage.

The word 麻酔 is a compound word formed from two kanji: ⚫︎麻 (*ma*) which refers to hemp. In ancient times, hemp was used in medicine as a pain reliever. ⚫︎酔 (*sui*) means "to be drunk" or "to be intoxicated." Combined, 麻酔 literally means "hemp intoxication," reflecting the historical use of substances to induce a state of insensitivity to pain.