✨📕 The NEWThe NEW Collegiate Dictionary, 12th Edition Over 5,000 words added — Buy Now! Collegiate DictionaryBuy Now!

stepbrother

noun

step·​broth·​er ˈstep-ˌbrə-t͟hər How to pronounce stepbrother (audio)
: a son of one's stepparent : the stepson of one's parent

Examples of stepbrother in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The girl had been on the cruise with her father, stepmother, 14-year-old biological brother and stepbrother. Alia Shoaib, MSNBC Newsweek, 21 Nov. 2025 After Anna's death, the stepbrother's father demanded a custody hearing, accusing his ex-wife of alienating their two youngest children from him after a violent altercation involving their oldest. Sarah Rumpf-Whitten , Michael Ruiz , Ashley Papa, FOXNews.com, 21 Nov. 2025 Kepner had been staying in the same room as her stepbrother and one other stepsibling. Cristian Benavides, CBS News, 21 Nov. 2025 Among the avenues investigators are looking at is whether there might have been some sort of altercation with her stepbrother prior to her death, the source told ABC News. Brian Hartman, ABC News, 19 Nov. 2025 See All Example Sentences for stepbrother

Word History

First Known Use

15th century, in the meaning defined above

Time Traveler
The first known use of stepbrother was in the 15th century

Browse Nearby Words

Cite this Entry

“Stepbrother.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/stepbrother. Accessed 26 Nov. 2025.

Kids Definition

stepbrother

noun
step·​broth·​er ˈstep-ˌbrət͟h-ər How to pronounce stepbrother (audio)
: a son of one's stepparent by a former partner

More from Merriam-Webster on stepbrother

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!