“UNHAT” is a valid word. — 8 points Scrabble

hatheaddress that protects the head from bad weather; has shaped crown and usually a brim
nah
nutusually large hard-shelled seed
huttemporary military shelter
tana browning of the skin resulting from exposure to the rays of the sun
antsocial insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers
huna member of a nomadic people who invaded Europe in the 4th century
tauthe 19th letter of the Greek alphabet
utaa reptile genus of Iguanidae
tuna large cask especially one holding a volume equivalent to 2 butts or 252 gals
nthlast or greatest in an indefinitely large series

ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
anan associate degree in nursing
uh
ah
ha(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day
naa silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)
unan organization of independent states formed in 1945 to promote international peace and security
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
nuthe 13th letter of the Greek alphabet
utthe local time at the 0 meridian passing through Greenwich, England; it is the same everywhere

UNHAT