It comes from Latin iactare meaning "to cast". Over time the c was dropped as French evolved and the i shifted to a y consonant and we get yeter. Once it was borrowed into English it further changed as the -er was dropped and short e became a long ee following the great vowel shift.
I am lying but most of those bits are facts and I'm actually describing the etymology of jet. Also the proto Indo European ye is hilariously uncanny.
This is indeed pulled out of the ass. The origin of the word 'yeet' is meme from vine. It did get added to several big boy dictionaries. There is speculation that the word was used regionally in the 2000s.
Now a bunch of people think it has some latin origin because it sounds convincing while a quick google search (or AI because, 2023) debunks the claim.
All roads lead to PIE. Or is that from? Oh, and maybe not "all."
But seriously, I went through a linguistics phase in my reading and came away with the sense that Proto Indo European is a lot closer to us than it seems at first glance.
I made a half-assed guess as to its meaning based on the fact that I've heard of an elite basketball player by that name. I got pretty close, according to urban dictionary.
Each to their own, but I may remind you that whenever your generation was growing up it’s incredibly likely that you were using words your parents didn’t use.
I can see you’ve already been informed how language evolves, and if you can’t accept that then I don’t know what to say. I guess I could ask why you ain’t talking all Shakespearean?
Lighten up, kid. Just because I chose not to partake in some flavor-of-the-week slang, doesn’t mean I’m unwilling to keep up with change.
I’m allowed to have an opinion that it’s fucking dumb.
And if it’s Shakespearean that you’re after….
Verily I perpend that though mayest o’er-rauhot thine aversion to proclivity and hastily fornicate thyself with nigh but the expertly expedience of one so deserved of such an unpregnant act.
Hell, whether you partake or not, it’s part of the process. Slang becomes part of the language if it’s good, and it doesn’t stick if enough people think it’s dumb. Keep doing what you’re doing!