“PIASABA” is a valid word. — 11 points Scrabble

biasa partiality that prevents objective consideration of an issue or situation
abasa loose sleeveless outer garment made from aba cloth; worn by Arabs
baasSouth African term for `boss'
bapsa small loaf or roll of soft bread
piasperennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch
isba

spaa health resort near a spring or at the seaside
sipa small drink
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
absany of a class of composite plastics used to make car bodies and cases for computers and other appliances
piaperennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch
psia unit of pressure
baathe cry made by sheep
bas
bis
bapa small loaf or roll of soft bread
abaa loose sleeveless outer garment made from aba cloth; worn by Arabs
aspof southern Europe; similar to but smaller than the adder
pis
ais
sab
aasan associate degree in applied science
siba person's brother or sister

ishave the quality of being; (copula, used with an adjective or a predicate noun)
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
baa soft silvery metallic element of the alkali earth group; found in barite
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
pithe ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
bia heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals
aaa dry form of lava resembling clinkers
aba bachelor's degree in arts and sciences

PIASABA