Immediate Family:
* Vader: Father
* Moeder: Mother
* Zoontje: Little son (diminutive, affectionate)
* Zoon: Son
* Dochtertje: Little daughter (diminutive, affectionate)
* Dochter: Daughter
* Broer: Brother
* Zus: Sister
* Tweelingbroer: Twin brother
* Tweelingzus: Twin sister
Extended Family:
* Grootvader: Grandfather
* Grootmoeder: Grandmother
* Opa: Grandpa (more common and informal)
* Oma: Grandma (more common and informal)
* Overgrootvader: Great-grandfather
* Overgrootmoeder: Great-grandmother
* Betovergrootvader: Great-great-grandfather
* Betovergrootmoeder: Great-great-grandmother
* Oom: Uncle
* Tante: Aunt
* Neef: Nephew
* Niece: Niece
* Achternicht: Great-niece
* Achterneef: Great-nephew
* Schoonvader: Father-in-law
* Schoonmoeder: Mother-in-law
* Schoonzoon: Son-in-law
* Schoondochter: Daughter-in-law
* Stiefvader: Stepfather
* Stiefmoeder: Stepmother
* Stiefbroer: Stepbrother
* Stiefzus: Stepsister
* Halfbroer: Half-brother
* Halfzus: Half-sister
* Zwager: Brother-in-law
* Schoonzus: Sister-in-law
* Echtgenoot/Man: Spouse/Husband
* Echtgenote/Vrouw: Spouse/Wife
Important Note: The diminutive forms (like *zoontje* and *dochtertje*) are used for young children and add a sense of affection. Using them for grown children would sound odd. Similarly, *opa* and *oma* are more common and informal than *grootvader* and *grootmoeder*.