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

rulea principle or condition that customarily governs behavior
gluecement consisting of a sticky substance that is used as an adhesive
urgean instinctive motive
lurequalities that attract by seeming to promise some kind of reward
reela roll of photographic film holding a series of frames to be projected by a movie projector
gleegreat merriment
leera facial expression of contempt or scorn; the upper lip curls
lugea racing sled for one or two people
grue
eger
gree
ruer

lega human limb; commonly used to refer to a whole limb but technically only the part of the limb between the knee and ankle
leeUnited States filmmaker whose works explore the richness of black culture in America (born in 1957)
geea unit of force equal to the force exerted by gravity; used to indicate the force to which a body is subjected when it is accelerated
rugfloor covering consisting of a piece of thick heavy fabric (usually with nap or pile)
rueEuropean strong-scented perennial herb with grey-green bitter-tasting leaves; an irritant similar to poison ivy
reg
ere
gela colloid in a more solid form than a sol
errto make a mistake or be incorrect
eelthe fatty flesh of eel; an elongate fish found in fresh water in Europe and America; large eels are usually smoked or pickled
lugancient Celtic god
gul
ree
erga cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter
leuthe basic unit of money in Moldova

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
elangular distance above the horizon (especially of a celestial object)

GRUELER