“ISOZYMIC” is a valid word. — 24 points Scrabble

cozya padded cloth covering to keep a teapot warm
cosya padded cloth covering to keep a teapot warm
misoa thick paste made from fermented soybeans and barley or rice malt; used in Japanese cooking to make soups or sauces
coys
mocs
zoicpertaining to animals or animal life or action
sizy

cosratio of the adjacent side to the hypotenuse of a right-angled triangle
soya source of oil; used for forage and soil improvement and as food
sim
icydevoid of warmth and cordiality; expressive of unfriendliness or disdain
coz
coyaffectedly modest or shy especially in a playful or provocative way
sicurge to attack someone
mis
yom
mos
cisan alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991
isma belief (or system of beliefs) accepted as authoritative by some group or school
oms
moc

ishave the quality of being; (copula, used with an adjective or a predicate noun)
my
sothe syllable naming the fifth (dominant) note of any musical scale in solmization
yo
moan indefinitely short time
midestruction of heart tissue resulting from obstruction of the blood supply to the heart muscle
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
oy
om
osa mouth or mouthlike opening

ISOZYMIC