sister's
Belonging to her
Sister's is the possessive form of sister, indicating something belonging to or associated with one's female sibling: my sister's car, her sister's wedding.
It also forms the possessive for members of religious orders: the sister's vows.
Context distinguishes it from the plural sisters.
Of a male sibling
- sibling'sBelonging to a fellow offspring
- mother'sOf the female parent
- father'sOf the male parent
- daughter'sFemale offspring's possessive
niece's · nephew's · aunt's · cousin's · grandmother's · family's · twin's · older
Belonging to a guardian
- bond'sConnection's possessive
- friendship'sOf a close relationship
- roommate'sBelonging to shared-space occupant
- closenessState of proximity
brother's
Of a male sibling
daughter's · niece's · nephew's · aunt's · cousin's · grandmother's · family's · twin's · older · younger
keeper's
Belonging to a guardian
- bond'sConnection's possessive
- friendship'sOf a close relationship
- roommate'sBelonging to shared-space occupant
closeness · solidarity · secret's · trust's
nun's
Of a convent dweller
monastery's · novice's · chapel's · community's · blessed · pious · humble · faithful
- big sisterOlder female sibling
- little sisterYounger female sibling
- older sisterFemale sibling born earlier
- younger sisterLater-born female sibling
- baby sisterYounger female sibling
- twin sisterSame-birth female sibling
sister, sisters, sisterly, sisterhood, stepsister, half-sister, sistered, unsisterly, sisters'