婿入り

1. Origins, structure, and basic meaning

• Structure: 婿入り, read むこいり, means a man marrying into his wife's household.
• Basic usage: In 結婚後、彼は妻の家へ婿入りして家業を手伝った。, after marriage, the man joins his wife's household and helps with its business.

2. Common pitfalls and similar expressions

• Joining a household
  • 妻の家へ婿入り focuses on which household the marriage brings the man into. The example about wanting an heir explains the background, but the word alone does not establish a particular legal adoption process.