Kinship at Core: Exploring Foundations of Kazakh Family Ties
The term is built using the root word for "in-law" and a possessive suffix: The general root for relatives by marriage. Qaynim
The suffix for "my" (e.g., Qaynim = "My [husband's younger] brother-in-law"). If you'd like, I can explain: Kinship at Core: Exploring Foundations of Kazakh Family