“MIXUPS” is a valid word. — 17 points Scrabble

sixthe cardinal number that is the sum of five and one
mixa commercially prepared mixture of dry ingredients
suma quantity of money
sipa small drink
ups
sim
supa small amount of liquid food
psia unit of pressure
pusthe tenth month of the Hindu calendar
mis
imp(folklore) fairies that are somewhat mischievous
mustype genus of the Muridae: common house mice; the tips of the upper incisors have a square notch
umpan official at a baseball game
pixa chest in which coins from the mint are held to await assay
piu
pis
isma belief (or system of beliefs) accepted as authoritative by some group or school
xis

ishave the quality of being; (copula, used with an adjective or a predicate noun)
upraise
usNorth American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
um
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
pithe ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
muthe 12th letter of the Greek alphabet
xithe cardinal number that is the sum of ten and one
xu

MIXUPS