婿

Glyph origin
.

Attested in Qin materials as ⿰士咠, which is of ; the phonetic part is later conflated into.

Etymology
Reminiscent of Proto-South-Bahnaric.

The Standard Mandarin pronunciation xù is due to rounding assimilation in the word, which generalized to the character reading.

Definitions

 * 1) son-in-law
 * 2) husband

Etymology 1
&#42; → * → * * → *  →

Found in the  of 720 with the ideographic spelling.

Although the reading muko is not confirmed in documents, the presence of cognate words suggests that this may be from  (cognate with 🇨🇬, 🇨🇬, 🇨🇬 and the moko below). This would be the a result of a phonological change, whereby non-final * in Proto-Japonic nouns shifted to become in Central Old Japanese.

In regard to the derivation, there are some theories proposed, however many of them are associated with the verbs and, both derived from , from 🇨🇬, from the idea of "the facing party, the other person (of a pair)"; see also. Theories to explain this inconsistency in the proto-forms have not been published yet.

Noun

 * 1) a husband who has entered his wife's house
 * 2) a son-in-law
 * 3) a groom, bridegroom
 * 1) a groom, bridegroom

Etymology 2
&#42; → → * →

From other dialects besides Central Old Japanese, with a conserved * as.

Possibly cognate or otherwise related with Old Japanese.

Noun

 * 1)   above

Etymology 3
From.

Affix

 * 1) groom
 * 2) son-in-law