CEFR B1
sibling-in-law
noun
Meaning
The brother or sister of one's spouse, or the spouse of one's sibling.
Examples
- My sibling-in-law is coming to visit us for the holidays this year.
- She gets along much better with her sibling-in-law than she does with her own brother.
Synonyms: brother-in-law, sister-in-law, in-law