sibship

A family photo shows the entire sibship together.

Definition

1. Noun (countable and uncountable):
   • The state of being a sibling or siblings: "sibship" refers to the relationship or bond between brothers and sisters.
   • A group of siblings: "sibship" can also mean the collective body of all the children born to the same parents, considered as a unit.
   • The condition of sharing one or both parents: In genetics and family studies, "sibship" denotes the fact of having the same parents.

Usage Examples

• (Their sibling relationship was strong.)
• (In families with many siblings, older ones assist with younger siblings.)
• (The research looked at four children from the same parents.)

Advanced Usage

• "within a sibship": referring to interactions or comparisons among siblings.

  • Birth order effects are often studied within a sibship. (Researchers compare siblings in the same family to see how order of birth influences development.)

• "full sibship" vs. "half-sibship": distinctions based on whether siblings share both parents or only one.

  • A full sibship shares both a mother and a father, while a half-sibship shares only one parent. (A complete sibling group versus a partial one.)

Variants and Related Words

• Sibling (n): a brother or sister.

  • She has three siblings: two sisters and one brother. (Her brothers and sisters.)

• Sib (n): a short form of sibling, sometimes used in genetics.

  • The sib pair showed similar traits. (The two siblings exhibited comparable characteristics.)

• Sibship does not have a verb or adjective form; it is strictly a noun.

Synonyms

• Siblinghood: the state or condition of being siblings.

  • Their siblinghood was marked by rivalry and affection. (Their relationship as brothers and sisters.)

• Brotherhood/sisterhood: the bond between brothers or sisters (less common for mixed-gender groups).

  • The sisterhood among the three girls was very strong. (The close relationship of sisters.)

Related Idioms

• There are no common idioms that directly use "sibship". However, the concept is often expressed through phrases like:
  • "Blood is thicker than water": emphasizing the importance of family ties, which includes sibship.

    • Even after years apart, their sibship reminded them of their shared history. (Their sibling bond reminded them of family loyalty.)

Additional Notes

• "Sibship" is a formal or technical term, most frequently used in sociology, psychology, and genetics. In everyday conversation, "sibling relationship" or "sibling group" is more common.
• It is rarely used in plural form ("sibships") except when referring to multiple sibling groups in research contexts.