half-sibling
One parent shared
A half-sibling is a brother or sister who shares one biological parent with you but not both.
Two people with the same mother but different fathers, or the same father but different mothers, are half-siblings: I have two half-siblings from my dad's second marriage.
The relationship is distinguished from full siblings, who share both parents.
Family line of descent
- lineageDescent from progenitors
- bloodlineAncestry through generations
- heritageInherited cultural legacy
- descentDownward slope or lineage
pedigree · family tree · genetics · inheritance · consanguinity · DNA · biological · progenitor
Male with shared parents
stepbrother · stepsister · stepsibling · siblinghood · fraternal · birth order
One who conceived offspring
- motherFemale parent
- fatherMale parent
- family treeChart of ancestors
- householdDomestic unit of residents
family unit · family dynamics · nuclear family · extended family · immediate family · next of kin · kinfolk · kindred
Household joined by remarriage
- co-parentingJoint child-rearing by separated adults
- stepmotherFather's spouse, not birth mother
- stepfatherMother's subsequent husband
- stepparentSpouse's prior child's caregiver
stepchild · remarriage · second marriage · joint custody · shared custody · visitation · bonding · adjustment
ancestry
Family line of descent
- lineageDescent from progenitors
- bloodlineAncestry through generations
- heritageInherited cultural legacy
descent · pedigree · family tree · genetics · inheritance · consanguinity · DNA · biological · progenitor · forebear
brother
Male with shared parents
triplet · stepbrother · stepsister · stepsibling · siblinghood · fraternal · birth order
biological parent
One who conceived offspring
- motherFemale parent
- fatherMale parent
- family treeChart of ancestors
household · family unit · family dynamics · nuclear family · extended family · immediate family · next of kin · kinfolk · kindred · parental
stepfamily
Household joined by remarriage
- co-parentingJoint child-rearing by separated adults
- stepmotherFather's spouse, not birth mother
- stepfatherMother's subsequent husband
stepparent · stepchild · remarriage · second marriage · joint custody · shared custody · visitation · bonding · adjustment · integration
- familymother, father, parents, parent, son
- family lifebirth, kinship, childbirth, pregnancy, new baby
- family termsparents, nuclear family, mothers, extended family, fathers
- kinshipmother, father, sister, brother, children
- household membersmom, mother, dad, father, son
- sibling bondsbrother, sister, twin, twinship, birth order
half-siblingfull sibling
Child sharing both parents
twin · identical twin · fraternal twin · only child · stranger
half-siblingstepsister
Sibling through remarriage
stepbrother · foster sibling · step-sibling · stepsibling · adopted sibling
half, sibling, siblings, half-sister, half-brother, half-blood, half-siblings