Words Containing OP and Ending in X

Making a list of words with OP that end in X? Sounds fun. Also sounds pretty specific. A list like that could go a long way, we're sure. This complete word list is tailored to your search parameters, whether they are words with OP or words that end in X. Or both, obviously.

13 letter words1 Word
archaeopteryx
11 letter words5 Words
electroplax
hypopharynx
nasopharynx
proprietrix
sceuophylax
10 letter words1 Word
oropharynx
9 letter words1 Word
metroplex
8 letter words2 Words
opopanax
opoponax
7 letter words1 Word
apoplex
4 letter words1 Word
opex