There are only two:
Xeric
X-ray
(and X-ray is kind of pushing it).
List of 9 letter words that start with the letter "K"KnowledgeKnighting
abridgedaccentedacquiredaddictedadorableaffectedalacrityamateursanointedansweredapproachapprisedappealedarrivingassumingattitudeautomateavailingavoiding
#
wantwarpwagewaitwadewarmwarnwashwearwhenwhatwhamwhimwaveweekweakweldweepweltwartweedweanwithwinewirewidewiskwishwoolwoodwormwolfwalkwestwaspwiltwake
DropDoorDoleDoteDeepDeerDopeDampDankDoneDuneDentdeskDarkDirtDeed
# Entity
nailnestnapenamenecknewsnerdnewtneonnextneatnearneednicenicknopenounnooknoonnormnosenodenoshnotenullnumbnuts
drain
obese omaha
Kangaroo
=chicago ==cameo=
Six letter words that start with the letter t:talenttargettaughtteapotthighsthirstthreatthriftthroatthrustthwarttickettidbittoilettomcattryouttypisttyrant