stepsisters's Usage Examples:

Jenner's stepsisters include Khloe, Kourtney, and Kim Kardashian.

Cinderella's loving father passed away, leaving her to take care of the whims of her selfish stepmother and two ugly, wicked stepsisters.

Cinderella (1950): Cinderella is her stepmother and stepsisters' maid when her father dies.

Poor little Wei, she'd always been the put upon Cinderella to a family of morally bankrupt ugly stepsisters.

Synonyms:

sis, half-sister, sister, half sister,

Antonyms:

brother, male sibling, nonmember, half-brother, big brother,