“ATLATLS” is a valid word. — 7 points Scrabble

stalla compartment in a stable where a single animal is confined and fed
atlas(Greek mythology) a Titan who was forced by Zeus to bear the sky on his shoulders
talasthe basic unit of money in Western Samoa
salalsmall evergreen shrub of Pacific coast of North America having edible dark purple grape-sized berries

lastthe temporal end; the concluding time
talla garment size for a tall person
salta compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)
alasby bad luck
stat
tatstastelessness by virtue of being cheap and vulgar
alls
latsthe basic unit of money in Latvia
talathe basic unit of money in Western Samoa
slata thin strip (wood or metal)
sall
altsangular distance above the horizon (especially of a celestial object)
aals

allquantifier; used with either mass or count nouns to indicate the whole number or amount of or every one of a class
satthe seventh and last day of the week; observed as the Sabbath by Jews and some Christians
las
sal
tattastelessness by virtue of being cheap and vulgar
alsthickening of tissue in the motor tracts of the lateral columns and anterior horns of the spinal cord; results in progressive muscle atrophy that starts in the limbs
alaa flat wing-shaped process or winglike part of an organism
lata broad flat muscle on either side of the back
att
altangular distance above the horizon (especially of a celestial object)
tas
aal
aasan associate degree in applied science

ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
asa very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar
laa white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
ala silvery ductile metallic element found primarily in bauxite
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
aaa dry form of lava resembling clinkers

ATLATLS