Formal term for one's daughter's husband; used in official or written contexts. In casual speech, 娘の夫 or 娘婿 (むすめむこ) is more common.
He joined the company as the president's son-in-law.
The newspaper said, 'The prime minister's son-in-law held a press conference.'
Standard kanji form; used in news and formal contexts.
Rarely used kanji form; 壻 is a variant of 婿.
Compound of 女 (woman, female) and 婿 (son-in-law, bridegroom). The kanji 壻 is a variant of 婿.