記念日（きねんび、kinenbi）
- anniversary

The Japanese word 記念日 means "anniversary," "commemoration day," or "memorial day." It refers to a special day that is remembered and celebrated because of a past event or a significant personal milestone. These events can be related to personal relationships, historical events, or important achievements. 記念日 usually involves reflection, remembrance, and sometimes celebration. The specific type of 記念日 determines how it's celebrated.

⚫︎ 結婚記念日 Translation: Wedding anniversary ⚫︎ 建国記念日 Translation: National Foundation Day (Japan) ⚫︎ 母の日 Translation: Mother's Day

⚫︎ You use 記念日 when talking about a specific day that marks an anniversary or a special occasion. ⚫︎ It's suitable for both formal and informal conversations, depending on the context of the event. ⚫︎ Commonly used phrases include "おめでとうございます" (omedetou gozaimasu - Congratulations) when congratulating someone on their 記念日. ⚫︎ You would use it in a conversation to inquire about or discuss specific anniversaries like birthdays, anniversaries, national holidays, etc. For example, "What 記念日 is tomorrow?" or "Today is my 記念日".

⚫︎ 記念日 is typically written with the kanji 記念 and the hiragana 日. ⚫︎ The reading is きねんび. ⚫︎ There aren't many variations in the okurigana, as it is standard.

⚫︎ 祝日 (shukujitsu) - national holiday ⚫︎ 祝賀 (shukuuga) - celebration, congratulation ⚫︎ メモリアルデー (memoraru dee) - Memorial Day (loanword, katakana)

There is no direct antonym for 記念日. However, the opposite could be seen as "a day not worth remembering" or a regular day.

今日は結婚記念日です。 ・Translation: Today is our wedding anniversary. ・Explanation: This sentence simply states that it is their wedding 記念日.

彼女の誕生記念日を祝いました。 ・Translation: We celebrated her birthday. ・Explanation: This sentence explains that they celebrated her birthday, which is a kind of 記念日.

The word 記念日 is derived from the following: ⚫︎ 記念 (kinen) which means "commemoration" or "remembrance". This word itself combines 記 (ki, to record) and 念 (nen, to think about). ⚫︎ 日 (bi) which means "day." Therefore, 記念日 literally means a "commemoration day" or a day for remembering.