adverberizing
The act or practice of coining or improvising new forms or uses of existing words not in the dictionary, often by appending a "y" at the end to suggest the new word is an adverb.
"The prgram is very crashy... It's not stable yet. Is that a real word, crashy?"
"It's OK, you're adverberizing it."
"It's OK, you're adverberizing it."