Definition of "siblinghood" []

• The state of being a sibling. (noun)

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• "My sister had decided, apparently, that broadcasting her relationship with her actual boyfriend was more important than broadcasting our whimsical siblinghood."
• "If the athleticism has always been there, the psychology of siblinghood has at times seemed to play a role."
• "Kim and this boy were long lost siblings who only needed to be properly reintroduced in order to restore their fidelity of siblinghood."