月曜日（げつようび、getsuyoubi）
- monday

月曜日 means "Monday" in Japanese. It's one of the seven days of the week. The word is composed of three parts: 月 (gets(u)) which means "moon" or "month", 曜 (you(u)) which indicates "day of the week", and 日 (bi) which is a counter for a day. Therefore, 月曜日 literally translates to "moon day", referring to the day associated with the moon in the traditional Japanese weekly system.

⚫︎ 今日は月曜日です。 Translation: Today is Monday. ⚫︎ 月曜日に会議があります。 Translation: There is a meeting on Monday.

⚫︎ You can use 月曜日 to specify when something happens, such as a meeting, a class, or an appointment. ⚫︎ It's also used to talk about events that occur every Monday, like a weekly routine. ⚫︎ Often used with particles like に (ni) meaning "on" or "at".

⚫︎ The word is typically written using the kanji 月曜日. ⚫︎ The reading, in hiragana, is げつようび. ⚫︎ 月曜日 is written without any okurigana variations.

There are no direct synonyms for "Monday" in Japanese.

The antonyms are the other days of the week: ⚫︎ 火曜日 (kayoubi) - Tuesday ⚫︎ 水曜日 (suiyoubi) - Wednesday ⚫︎ 木曜日 (mokuyoubi) - Thursday ⚫︎ 金曜日 (kinyoubi) - Friday ⚫︎ 土曜日 (doyoubi) - Saturday ⚫︎ 日曜日 (nichiyoubi) - Sunday

来週の月曜日に新しいプロジェクトを始めます。 ・Translation: We will start the new project next Monday. ・Explanation: This sentence uses 月曜日 to specify when the new project will begin.

私は毎週月曜日に日本語の授業を受けます。 ・Translation: I take Japanese class every Monday. ・Explanation: This sentence describes a weekly activity occurring on Mondays.

The etymology derives from the traditional Japanese system for naming the days of the week, which is based on celestial bodies. 月 (getsu), the moon, represents the day associated with it. The combination with 曜日 (youbi), meaning "day of the week", and the day counter 日 (bi) gave rise to the term 月曜日, meaning "Monday".