Japanese

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Kanji in this term
せい
Grade: 5

Grade: 2
on'yomi

Etymology

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Blend of (sei, sex) +‎ 聖夜 (seiya, Christmas Eve). Christmas is associated with the romance of young couples in Japan.

Pronunciation

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Proper noun

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(せい)() (Seiya

  1. (Internet slang, humorous, pun) Christmas Eve, as a night of sexual activity between young couples