8 letter words:
unpurged12,
7 letter words:
unurged9,
6 letter words:
purged10,
pruned9,
repugn9,
gerund8,
nudger8,
unpure8,
5 letter words:
drupe8,
duper8,
perdu8,
prude8,
purge8,
unpeg8,
upend8,
urped8,
nudge7,
prune7,
urged7,
nuder6,
under6,
undue6,
4 letter words:
dupe7,
pend7,
pung7,
dreg6,
drug6,
dung6,
gude6,
pure6,
dune5,
dure5,
durn5,
genu5,
grue5,
guru5,
nerd5,
nude5,
nurd5,
rend5,
rude5,
rued5,
rung5,
unde5,
urge5,
rune4,
3 letter words:
dup6,
ped6,
peg6,
pud6,
pug6,
dug5,
ged5,
pen5,
per5,
pun5,
pur5,
rep5,
urp5,
den4,
due4,
dun4,
end4,
eng4,
erg4,
gen4,
gnu4,
gun4,
neg4,
red4,
reg4,
rug4,
urd4,
ern3,
rue3,
run3,
urn3,
2 letter words:
pe4,
up4,
de3,
ed3,
en2,
er2,
ne2,
nu2,
re2,
un2,
