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

griff
gruffbrusque and surly and forbidding
fungithe taxonomic kingdom including yeast, molds, smuts, mushrooms, and toadstools; distinct from the green plants
ruingfeel remorse for; feel sorry for; be contrite about
unrig

ringa characteristic sound
ruinan irrecoverable state of devastation and destruction
runga crosspiece between the legs of a chair
grina facial expression characterized by turning up the corners of the mouth; usually shows pleasure or amusement
riffa Berber living in northern Morocco
ruffan external body part consisting of feathers or hair about the neck of a bird or other animal
frig
guffunacceptable behavior (especially ludicrously false statements)
grig
frug
firn
girn

runa score in baseball made by a runner touching all four bases safely
funactivities that are enjoyable or amusing
guna weapon that discharges a missile at high velocity (especially from a metal tube or barrel)
giglong and light rowing boat; especially for racing
furthe dressed hairy coat of a mammal
ginstrong liquor flavored with juniper berries
riggear (including necessary machinery) for a particular enterprise
rugfloor covering consisting of a piece of thick heavy fabric (usually with nap or pile)
finthe cardinal number that is the sum of four and one
urna large vase that usually has a pedestal or feet
rin
figa diagram or picture illustrating textual material
firnonresinous wood of a fir tree
iff
gnularge African antelope having a head with horns like an ox and a long tufted tail
fug(British informal) an airless smoky smelly atmosphere
rif

ina unit of length equal to one twelfth of a foot
if
unan organization of independent states formed in 1945 to promote international peace and security
nuthe 13th letter of the Greek alphabet

GRUFFING