日曜日（にちようび、nichiyoubi）
- sunday

The Japanese word 日曜日日曜日 (nichiyoubi) means "Sunday." It is one of the days of the week. It refers to the seventh day of the week in the Gregorian calendar and is often associated with the rest day or the beginning of the week for many people.

⚫︎日曜日日曜日は家族と公園に行きました。 Translation: I went to the park with my family on Sunday. ⚫︎ 毎週日曜日日曜日に教会に行きます。 Translation: I go to church every Sunday. ⚫︎ 今週の日曜日日曜日は友達と映画を見に行く予定です。 Translation: I plan to go see a movie with my friends this Sunday.

You use 日曜日日曜日 to refer to the day of the week, Sunday. It can be used in various contexts, such as planning activities, describing past events, or discussing schedules. It's often used with time-related words like "今週" (this week), "毎週" (every week), or "来週" (next week).

日曜日日曜日 is typically written using the kanji 日 (ni - day/sun), 曜 (you - day of the week), and 日 (bi - day). It is read as にちようび in hiragana. There are no other ways to write this word. The okurigana is fixed.

There are no direct synonyms for 日曜日日曜日 in the sense of a different word. However, you might use phrases to describe what you do on Sunday, like "休日" (kyuujitsu - holiday) if it's a day off.

The antonyms are the other days of the week, such as 月曜日 (getsuyoubi - Monday), 火曜日 (kayoubi - Tuesday), etc.

《日曜日日曜日はゆっくり休みたいです。》 ・Translation: I want to relax on Sunday. ・Explanation: This sentence expresses a desire to have a restful Sunday.

来週の《日曜日日曜日にパーティーがあります。》 ・Translation: There will be a party next Sunday. ・Explanation: This sentence is used to announce the plan for a party on the following Sunday.

The word 日曜日日曜日 is formed by combining the kanji 日 (ni - day/sun), 曜 (you - day of the week), and 日 (bi - day). The "sun" in this case is a reference to the sun god, the namesake of the day in many cultures. The Japanese adopted the concept of a seven-day week from Western culture.