bridegroom, son-in-law
婿 centers on a man who marries into a family: a bridegroom or son-in-law. Both meanings describe the same role from different perspectives—the man entering the marriage and his relationship to the bride's parents.
婿 combines 女 (woman) with 胥, which likely contributes the sound and originally meant 'to assist' or 'to wait upon,' suggesting a man who joins the woman's family. The exact historical development of 胥 is uncertain.
A woman 女 stands beside 胥, a shape that looks like a man with a hat and a cane, ready to be welcomed as the new son-in-law or bridegroom.
For セイ, imagine the bridegroom saying 'Say yes!' at the wedding: 'Say' -> セイ, and the woman 女 accepts him into the family.
husband; groom
bridegroom
son-in-law taken (adopted) into family
bridegroom who is loved by his bride
your son-in-law
man who takes his wife's family name and marries into her family; man who is adopted by his wife's family
son-in-law
the husband of one's younger sister
the husband of one's elder sister
being besieged by suitors; to be popular; eight suitors for one daughter
son-in-law
being adopted into the family of one's bride
marriage in which a man is adopted into the bride's family; uxorilocal marriage
adopting a son-in-law into one's family; marrying off one's daughter
search for a husband for one's daughter
one's favorite son-in-law; one's favourite son-in-law
marriage in which a man is adopted into the bride's family; matrilocal marriage
prince consort
prince consort
brother-in-law