Words Containing UP and Ending in X

Making a list of words with UP 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 UP or words that end in X. Or both, obviously.

12 letter words1 Word
heteroduplex
10 letter words2 Words
quadruplex
superhelix
9 letter words1 Word
superflux
8 letter words5 Words
octuplex
superfix
supermax
supersex
supertax
6 letter words2 Words
duplex
suplex