I tried out "portmanteau" a word which actually DOES exist and is kinda what you're going for here. From Wikipedia:

A portmanteau or portmanteau word is a blend of words in which parts of multiple words are combined into a new word, as in smog, coined by blending smoke and fog, or motel, from motor and hotel. In linguistics, a portmanteau is a single morph that is analyzed as representing two underlying morphemes

Your tool says:

"a word that probably exists; with an alternative definition made by a machine learning algorithm."