Last Updated
：2026/01/07
性夜
Hiragana
せいや
Proper noun
Internet
humorous
slang
Japanese Meaning
クリスマス・イヴを、若いカップルが性的な行為を行う『性』の夜ととらえ、しゃれやネタとして呼ぶ俗語的・ネットスラング的な言い方。『聖夜（せいや）』と同音であることを利用した当て字的な表現。
Easy Japanese Meaning
クリスマスのよるに わかいカップルが せいこうする と おもしろく いう ことば
Chinese (Simplified) Meaning
日语网络俚语，对“圣夜”（圣诞前夜）的谐音戏称，意为“性之夜” / 指圣诞前夜被调侃为年轻情侣发生性行为的夜晚
Chinese (Traditional) Meaning
網路用語／諧音梗：指聖誕前夜，被戲稱為年輕情侶進行性活動的夜晚。 / 玩笑式稱呼：將「聖夜」改作「性夜」，意指浪漫約會與親密行為的夜晚。
Korean Meaning
크리스마스 이브를 젊은 커플의 성적 밤으로 비꼬아 부르는 말 / 크리스마스 이브를 성적 농담으로 표현한 인터넷 은어
Vietnamese Meaning
(tiếng lóng mạng, chơi chữ) Đêm Giáng Sinh, ám chỉ “đêm làm tình” của các cặp đôi trẻ / Cách viết đùa thay cho 聖夜 (“đêm thánh”), dùng 性 (“tình dục”)
Tagalog Meaning
Mapagpatawang tawag sa Bisperas ng Pasko bilang gabi ng pagtatalik ng magkasintahan. / Dula-salita sa internet para sa Christmas Eve na itinuturing na gabi ng sekswal na aktibidad ng magkasintahang nasa hustong gulang.
Sense（1）
(Internet slang, humorous, pun) Christmas Eve, as a night of sexual activity between young couples
（ canonical ）
（ romanization ）
（ hiragana ）
Quizzes for review
(Internet slang, humorous, pun) Christmas Eve, as a night of sexual activity between young couples
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性夜
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I made new friends in the Seiya chat room.
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性夜のチャットルームで新しい友達を作った。
Japanese - English
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