sisterinlaw

Definition: A sister-in-law is a person who is related to someone by marriage. The term typically refers to either the sister of a person’s spouse, or the wife of one’s sibling. In some contexts, it also extends to the wife of one’s spouse’s sibling; usages may vary by region and family.

Usage: In everyday speech, a sister-in-law may be described as “my sister-in-law” regardless of the exact route of the relationship. For example, a man’s wife’s sister is his sister-in-law, as is the wife of his brother. The reverse may apply in some languages, but in English the term is used for both situations.

Relationships and social role: The degree of closeness between a person and their sister-in-law varies widely. Some maintain regular contact and treat the relationship as part of the extended family; others have more distant ties. In many cultures, sisters-in-law participate in family events and support networks.

Etiquette and implications: Etiquette notes include respect for boundaries, clear communication, and sensitivity to family dynamics, especially during weddings, holidays, and caregiving situations. No formal legal status is implied beyond marriage ties, though some legal frameworks recognize in-law relationships for certain rights or duties.

See also: Brother-in-law, In-law, Family.