“ATARAXIC” is a valid word. — 17 points Scrabble

ataxiainability to coordinate voluntary muscle movements; unsteady movements and staggering gait
ataxiclacking motor coordination; marked or caused by ataxia

tiaraa jeweled headdress worn by women on formal occasions
carata unit of weight for precious stones = 200 mg
atriaany chamber that is connected to other chambers or passageways (especially one of the two upper chambers of the heart)
riataa long noosed rope used to catch animals
acariany of several mites of the order Acarina
triac

taxia car driven by a person whose job is to take passengers where they want to go in exchange for money
carta heavy open wagon usually having two wheels and drawn by an animal
ariaan elaborate song for solo voice
raia
acta
taxaanimal or plant group having natural relations
airtchannel into a new direction

cara motor vehicle with four wheels; usually propelled by an internal combustion engine
aira mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of
acta legal document codifying the result of deliberations of a committee or society or legislative body
artthe products of human creativity; works of art collectively
catfeline mammal usually having thick soft fur and no ability to roar: domestic cats; wildcats
ratany of various long-tailed rodents similar to but larger than a mouse
taxcharge against a citizen's person or property or activity for the support of government
arcelectrical conduction through a gas in an applied electric field
tarany of various dark heavy viscid substances obtained as a residue
tica local and habitual twitching especially in the face
ria
ait
rax

itthe branch of engineering that deals with the use of computers and telecommunications to retrieve and store and transmit information
ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
aian agency of the United States Army responsible for providing timely and relevant and accurate and synchronized intelligence to tactical and operational and strategic level commanders
ara colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
axan edge tool with a heavy bladed head mounted across a handle
aaa dry form of lava resembling clinkers
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

ATARAXIC