stepsister

noun

step·​sis·​ter ˈstep-ˌsi-stər 

: the daughter of one's stepparent : the stepdaughter of one's parent

Examples of stepsister in a Sentence

Recent Examples on the Web

In addition to his son, Rosenbaum is survived by his father, Chuck, his sister, Heidi Jurish, his stepmother (Mona) and stepsisters (Dana and Renee Garfin), his daughter-in-law (Kahlia), aunt and uncle Margo and Don Blumenthal and cousin Joscelyn. —Rafael Olmeda, Sun Sentinel, 5 Mar. 2026

There are also two stepsisters, neither ugly but one quite bratty. —Judy Berman, Time, 29 Jan. 2026

Schloss' stepsister Anne and the Frank family hid in a secret annex in Amsterdam for two years during World War II to evade Nazi persecution for their Jewish faith. —Janine Henni, PEOPLE, 5 Jan. 2026

Auschwitz survivor Eva Schloss, the stepsister of teenage diarist Anne Frank and a tireless educator about the horrors of the Holocaust, has died. —CBS News, 5 Jan. 2026

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for stepsister

• resister
• resistor
• transistor
• blister
• lyster
• mister
• sister
• twister

Kids Definition

stepsister

noun

step·​sis·​ter ˈstep-ˌsis-tər 

: a daughter of one's stepparent by a former partner