“YOICKS” is a valid word. — 15 points Scrabble

sickpeople who are sick
sockhosiery consisting of a cloth covering for the foot; worn inside the shoe; reaches to between the ankle and the knee
cosya padded cloth covering to keep a teapot warm
ickyvery bad
yock
coys
yoks

skythe atmosphere and outer space as viewed from the earth
cosratio of the adjacent side to the hypotenuse of a right-angled triangle
skinarrow wood or metal or plastic runners used in pairs for gliding over snow
soya source of oil; used for forage and soil improvement and as food
icydevoid of warmth and cordiality; expressive of unfriendliness or disdain
coyaffectedly modest or shy especially in a playful or provocative way
sicurge to attack someone
koi
ick
cisan alliance made up of states that had been Soviet Socialist Republics in the Soviet Union prior to its dissolution in Dec 1991
kos(in India) a unit of length having different values in different localities
yok
oks

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
ok
yo
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
osa mouth or mouthlike opening

YOICKS