the.com/sister

the built-in best friend you didn't ask for and can't return.

means a female sibling who shares one or both of your parents, or by extension a woman bonded to you as close as family.

from From Old English 'sweostor,' descended from Proto-Germanic 'swestēr' and traceable all the way back to Proto-Indo-European '*swésōr' — one of the oldest, most stable words humans have. Its cousins crowd the family tree: Latin 'soror' (giving us 'sorority'), Sanskrit 'svasar,' German 'Schwester.' The modern form with its hard 'st' was nudged along by the Old Norse 'systir' brought by Viking settlers, the linguistic equivalent of a relative moving in whether you liked it or not.

word root
From Proto-Indo-European, among humanity's oldest kinship words
birth order
Older sisters statistically tend toward higher academic achievement
animal kin
Hyena clans are ruled by dominant females and their daughters
shared history
She remembers your childhood crimes in courtroom detail
sisterhood
Honeybee colonies are almost entirely sisters serving one queen
for instance

venus and serena williams — tennis champions who won 30 grand slams combined and played each other 9 times

kate and pippa middleton — british sisters, one married prince william, other prominent in society

paris and nicky hilton — hotel heiress sisters famous for reality tv and celebrity culture in 2000s

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