US /ˈstɛpˌbrʌðɚ/ UK /ˈstɛpˌbrʌðə/
noun

Meanings

  1. 1
    noun

    a son of one's stepparent by an earlier marriage

    His new stepbrother moved into the spare room down the hall.

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Word family

Etymology

A compound of the prefix 'step-' (Old English 'stēop-', denoting bereavement or a relationship by remarriage) and 'brother' (Old English 'brōþor').

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