A sibling is a brother or a sister; that is, any person who shares at least one of the same parents.
In most societies throughout the world, siblings usually grow up together and spend a good deal of their childhood with each other. This genetic and physical closeness may be marked by the development of strong emotional associations such as love or enmity. The sibling bond is often complicated and is influenced by factors such as parental treatment, birth order, personality, and people and experiences outside the family.
This text uses material from Wikipedia, licensed under CC BY-SA
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