It’s what? Day nine? I was kind of running out of ideas when I went, hey, idea. That’ll do.
Idea showed up in the late fourteenth century meaning an archetype or a concept from the mind of god. It comes from the classical Latin idea, which means idea (if that makes sense). Unsurprisingly, Latin took it from the Greek idea (oh, man, the spellings in this one are killing me), which, all together now, means idea. It comes from the word idein, which in turn comes from the Proto Indo European wid-es-ya- and weid-, to see, and the origin word for vision. I guess because you see an idea in your head, it comes from the word for seeing.