“UNPURE” is a valid word. — 8 points Scrabble

purefree of extraneous elements of any kind
runeany character from an ancient Germanic alphabet used in Scandinavia from the 3rd century to the Middle Ages

runa score in baseball made by a runner touching all four bases safely
per
pena writing implement with a point from which ink flows
rueEuropean strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy
repinformal abbreviation of `representative'
urna large vase that usually has a pedestal or feet
puna humorous play on words
ernbulky greyish-brown eagle with a short wedge-shaped white tail; of Europe and Greenland
pur

upraise
era trivalent metallic element of the rare earth group; occurs with yttrium
rea rare heavy polyvalent metallic element that resembles manganese chemically and is used in some alloys; is obtained as a by-product in refining molybdenum
enhalf the width of an em
unan organization of independent states formed in 1945 to promote international peace and security
nea colorless odorless gaseous element that give a red glow in a vacuum tube; one of the six inert gasses; occurs in the air in small amounts
pethe 17th letter of the Hebrew alphabet
nuthe 13th letter of the Greek alphabet

UNPURE