pseudosibling

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English[edit]

Etymology[edit]

pseudo- +‎ sibling

Noun[edit]

pseudosibling (plural pseudosiblings)

  1. One who is not a sibling but has a relationship of that kind.
    • 1982, David P. Barash, Sociobiology and behavior
      ...the girls were older than average when they entered the family and thus did not develop the usual pseudosibling relationship...
    • 2007 April 19, Kate Murphy, “Stepfamilies Try to Stretch Their Space”, New York Times:
      With multiple stepparents, stepsiblings, half siblings and pseudosiblings, it’s a whole new type of family, and with it comes the challenge to design a home where everyone feels welcome.