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[step-bruhth-er] /ˈstɛpˌbrʌð ər/
one's stepfather's son or stepmother's son by a previous marriage.
Origin of stepbrother
late Middle English
late Middle English word dating back to 1400-50; See origin at step-, brother Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for stepbrother
Contemporary Examples
Historical Examples
  • "That must be Carl's stepbrother, Peter," Gilbert decided, as he noted the boy's mean face and turn-up nose.

    Driven From Home Horatio Alger
  • The stepbrother and James had not been on terms of effusive cordiality.

  • Fritz, too, came over from Pinneberg, and greeted his stepbrother in the artist's room before the concert began.

  • Your stepbrother, Mark Manning, enjoys the same advantages as yourself, does he not?

    Making His Way Horatio Alger, Jr.
  • They had not been consulted about Lesbia's future, and were ready to find fault with her stepbrother's arrangement for her.

    Loyal to the School Angela Brazil
  • On the whole, he was sorry to meet his stepbrother just at this time.

    Making His Way Horatio Alger, Jr.
  • In that year Sir Humphrey Gilbert, his stepbrother, prevailed upon him to join in a projected voyage.

  • I have a stepfather and stepbrother, neither of whom I like.

    Making His Way Horatio Alger, Jr.
  • But at last he suddenly whirled his chair around, rasping on the floor, and faced his stepbrother.

British Dictionary definitions for stepbrother


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
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Word Origin and History for stepbrother

mid-15c., from step- + brother (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
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