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Synonyms

stepbrother

American  
[step-bruhth-er] / ˈstɛpˌbrʌð ər /

noun

  1. one's stepfather's son or stepmother's son by a previous marriage.


stepbrother British  
/ ˈstɛpˌbrʌðə /

noun

  1. a son of one's stepmother or stepfather by a union with someone other than one's father or mother respectively

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of stepbrother

late Middle English word dating back to 1400–50; see origin at step-, brother

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“I was so excited to go. We told his stepbrother, who lives there, so he had cleared his schedule. I had to tell him that we can’t go anymore. We still haven’t gone.”

From MarketWatch • May 13, 2026

"I'm really happy that people have a place to do this," she told AFP between her table of refreshments and the green camping tent she shares with her mother, stepbrother, and his mother.

From Barron's • Mar. 2, 2026

Ruiz told the paper her boyfriend’s brother and stepbrother were among the missing.

From Los Angeles Times • Jul. 3, 2025

Baena's surviving family includes his mother Barbara Stern and stepfather Roger Stern; father Scott and stepmother Michele Baena; brother Brad Baena; stepsister Bianca Gabay and stepbrother Jed Fluxman.

From BBC • Jan. 7, 2025

Roy walked along the outside of the fence, scouting for Beatrice’s stepbrother or any clever surprises he might have left for the pancake-house people.

From "Hoot" by Carl Hiaasen

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