* Words evolve: Language is constantly changing. Words develop over time, often from earlier forms or through combinations of existing words.
* Old English: "Said" comes from the Old English word "sæd," meaning "past tense of the verb to say." Old English was spoken in England from roughly the 5th century to the 12th century.
* No single inventor: Words aren't invented like gadgets. They emerge and change organically within a language community.
In summary: While we don't know the precise date of "said," it's been part of the English language for a very long time, evolving from earlier forms of the word.