“COXITIS” is a valid word. — 16 points Scrabble

sitbe seated
its
sixthe cardinal number that is the sum of five and one
cosratio of the adjacent side to the hypotenuse of a right-angled triangle
tis
coxeither of two related enzymes that control the production of prostaglandins and are blocked by aspirin
cota sheath worn to protect a finger
sox
tica local and habitual twitching especially in the face
sicurge to attack someone
cisan alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991
sota chronic drinker
xis

to
itthe branch of engineering that deals with the use of computers and telecommunications to retrieve and store and transmit information
ishave the quality of being; (copula, used with an adjective or a predicate noun)
sothe syllable naming the fifth (dominant) note of any musical scale in solmization
sia tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
oxan adult castrated bull of the genus Bos; especially Bos taurus
xithe cardinal number that is the sum of ten and one
tia light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite
osa mouth or mouthlike opening

COXITIS