“TSADI” is a valid word. — 6 points Scrabble

saidbeing the one previously mentioned or spoken of
aidsa serious (often fatal) disease of the immune system transmitted through blood products especially by sexual contact or contaminated needles
daisa platform raised above the surrounding level to give prominence to the person on it
sati
ditaevergreen tree of eastern Asia and Philippines having large leathery leaves and small green-white flowers in compact cymes; bark formerly used medicinally
adita nearly horizontal passage from the surface into a mine
sadi
tadsa slight amount or degree of difference
ditsthe shorter of the two telegraphic signals used in Morse code
aits

sitbe seated
its
sadexperiencing or showing sorrow or unhappiness
satthe seventh and last day of the week; observed as the Sabbath by Jews and some Christians
aida resource
ads
tis
tada slight amount or degree of difference
ids
disgod of the underworld; counterpart of Greek Pluto
ditthe shorter of the two telegraphic signals used in Morse code
tas
ais
ait

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)
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
ida state in the Rocky Mountains
ada public promotion of some product or service
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
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
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

TSADI