Part of speech: Adjective
being one more than three
Quaternion, Foursome, , Four, Iv
The word "four" comes from Proto-Indo-European *kʷetwṓr. It started in Proto-Germanic *fedwōr. Then it appeared in Proto-West Germanic *feuwar. Later, people used it in Old English fēower. After that, it was Middle English four. Many other languages have similar words:.
Each civilization borrowed this word because they encountered the concept through cultural contact.