If Rhaast means ‘obey’ what does Aatrox and Varus mean?

Aatrox is directly translated as "riven"

I always thought of that quote between kayn and rhaast as more of a joke, but actually now you've sparked my curiosity too lol. what if rhaast wasn't just saying "obey" to try to poke a little fun at kayn, but rather it actually does mean obey haha thatd be interesting to know

I think Rhaast was just toying with Kayn. That isnt actually the meaning of his name.