“SPIKILY” is a valid word. — 16 points Scrabble

lipseither of two fleshy folds of tissue that surround the mouth and play a role in speaking
slipa socially awkward or tactless act
skipa gait in which steps and hops alternate
silka fabric made from the fine threads produced by certain insect larvae
lispa speech defect that involves pronouncing `s' like voiceless `th' and `z' like voiced `th'
yipsnervous tension that causes an athlete to fail (especially causes golfers to miss short putts)
pili
kipssleep
piki
spik(ethnic slur) offensive term for persons of Latin American descent
ilksa kind of person
pily
syli

skythe atmosphere and outer space as viewed from the earth
spy(military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors
lipeither of two fleshy folds of tissue that surround the mouth and play a role in speaking
skinarrow wood or metal or plastic runners used in pairs for gliding over snow
sipa small drink
slymarked by skill in deception
kipsleep
yipa sharp high-pitched cry (especially by a dog)
psia unit of pressure
lis
plyone of the strands twisted together to make yarn or rope or thread; often used in combination
ilka kind of person
pis

ishave the quality of being; (copula, used with an adjective or a predicate noun)
lia soft silver-white univalent element of the alkali metal group; the lightest metal known; occurs in several minerals
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
pithe ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...

SPIKILY