noun

sibling

sibling

I have one sibling, a younger sister.

I have one sibling, a younger sister.

There is a lot of sibling rivalry between them.

There is a lot of sibling rivalry between them.

((a/an/one's)) sibling a brother or sister I have one sibling.

Synonyms: brother, sister

From Old English 'sibb' (kinship) + '-ling' (a suffix indicating a person or thing of a certain kind).

Think of 'siblings' sitting together. The 'sib' part sounds like 'sit'.

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