Some words that have U and X in them are:
There are no words that have double-x in them.
words: x-ray
There are words that start with every letter of the alphabet in mathematics. For x some words are x-intercept, x-y plane, x-z plane, and Xi.
are there any x words in Washington state?
There are no complimenting words that begin with X.
Some words that have an X in the middle are:ambidexterityantioxidantapproximateaxeboxerfaxesfixeshexesmaximmixesmoxienexusobnoxiousoverexposedparadoxicallypixiesixthTexastoxicvexeswaxes
x-ray
six
x-rayextantexactdoxycyclinebetamaxchickenpoxetc., etc.
THere are 303 words that begin with the letter X.
Some words that have the letters J and X in them:JambeauxJeuxJinxedjinxesJinxingJinxJukeboxesJukeboxJuxtaposedJuxtaposeJuxtaposesJuxtaposingJuxtapositionJuxtapositions
X-rayXenonXeroxSince the question asked for "three-letter" words beginning with "X", how about "xis"?