What do I call a word with roots from multiple languages?
Solution 1:
I came across the term "hybrid word" when I was researching quadraphonic (which is one). This phrase would work for your situation.
Plus, "sociopath" is listed as an example of a hybrid word in the linked page.
Solution 2:
I don't know that there is an accepted single term for words of this sort. I suggest that we coin the self-describing term heteroradical.
Solution 3:
'Multilingually derived' though two separate words, avoids neologisms and says what it means.