Thanks, but I cheateded.
I went looking for synonyms of "puke," hoping for something that started with a "g" but maybe with some sort of an "rgh" at the end or something sounding like it was wretching in the process of saying the word.
Couldn't find it, but there was "gag."
Yes, folks, I am so unimaginative that I couldn't even come up with the word "gag" myself.