Sibling Rivalry: German In The 1900's

The word sibling once meant anyone who is related to you, but now it's reserved for children of the same parent or parents. It is a word that was once out of use but then brought back into English in the early 1900’s as a useful word in anthropology. If you and your brother fight all of the time, your parents might call it sibling rivalry. You might just call him annoying and run from the room. According to Vocabulary, sibling word was once out of use, but then use again in the 1900’s as a functional expression in anthropology. Siblings originally meant as someone who is associated with you, but now it’s the term called for the children who have both parents.