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

soapa cleansing agent made from the salts of vegetable or animal fats
piso
poisHawaiian dish of taro root pounded to a paste and often allowed to ferment
piasperennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch

spaa health resort near a spring or at the seaside
sipa small drink
ops(Roman mythology) goddess of abundance and fertility; wife of Saturn; counterpart of Greek Rhea and Cybele of ancient Asia Minor
pas(ballet) a step in dancing (especially in classical ballet)
sapa watery solution of sugars, salts, and minerals that circulates through the vascular system of a plant
piaperennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch
psia unit of pressure
poiHawaiian dish of taro root pounded to a paste and often allowed to ferment
soppiece of solid food for dipping in a liquid
aspof southern Europe; similar to but smaller than the adder
pis
ais

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
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
paan informal term for a father; probably derived from baby talk
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
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
op
pithe ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
osa mouth or mouthlike opening

PSOAI