12 letter words:
interrupting15,
10 letter words:
preuniting13,
reprinting13,
unretiring11,
9 letter words:
inputting12,
irrupting12,
puttering12,
interrupt11,
interring10,
intriguer10,
retinting10,
returning10,
reuniting10,
interunit9,
8 letter words:
erupting11,
printing11,
repining11,
reputing11,
ripening11,
inputter10,
prurient10,
grittier9,
intrigue9,
retiring9,
retuning9,
tenuring9,
unerring9,
untieing9,
untiring9,
uttering9,
nutrient8,
7 letter words:
gripier10,
peining10,
penguin10,
petting10,
pitting10,
pruning10,
pungent10,
punting10,
purring10,
putting10,
printer9,
punnier9,
purtier9,
puttier9,
reprint9,
unriper9,
enuring8,
ginnier8,
gittern8,
grinner8,
gritter8,
grunter8,
grutten8,
guttier8,
igniter8,
inuring8,
netting8,
nutting8,
reining8,
renting8,
retting8,
ringent8,
ruining8,
rutting8,
tenting8,
tiering8,
tinting8,
trining8,
trueing8,
turgent8,
turgite8,
turning8,
uniting8,
nitrite7,
nittier7,
nuttier7,
runnier7,
runtier7,
ruttier7,
tinnier7,
6 letter words:
griper9,
pieing9,
pignut9,
pinger9,
pining9,
purger9,
repugn9,
riping9,
upgirt9,
urping9,
euripi8,
irrupt8,
periti8,
pinier8,
pinite8,
pinner8,
pitier8,
pruner8,
pterin8,
punier8,
punner8,
punnet8,
punter8,
purine8,
putter8,
puttie8,
tenpin8,
tiepin8,
turnip8,
unpent8,
unripe8,
engirt7,
erring7,
ginner7,
gittin7,
gunite7,
gunner7,
gurnet7,
gutter7,
ignite7,
ringer7,
tieing7,
tining7,
tiring7,
truing7,
tuning7,
ungirt7,
urgent7,
intent6,
intern6,
intine6,
intuit6,
inturn6,
nutter6,
retint6,
return6,
ritter6,
ruiner6,
runner6,
tenuti6,
territ6,
tinier6,
tinner6,
tinter6,
triter6,
triune6,
turner6,
turret6,
uniter6,
unrent6,
5 letter words:
genip8,
getup8,
gripe8,
gript8,
piing8,
purge8,
unpeg8,
erupt7,
inept7,
input7,
penni7,
petit7,
petti7,
prier7,
print7,
prune7,
purer7,
purin7,
putti7,
repin7,
ripen7,
riper7,
tripe7,
unpen7,
unpin7,
unrip7,
genii6,
grunt6,
iring6,
reign6,
renig6,
rerig6,
ruing6,
tiger6,
tinge6,
unrig6,
urger6,
ennui5,
inert5,
inner5,
inrun5,
inter5,
inure5,
inurn5,
niter5,
nitre5,
renin5,
rerun5,
rutin5,
tetri5,
titer5,
titre5,
trier5,
trine5,
trite5,
truer5,
tuner5,
unite5,
untie5,
urine5,
uteri5,
utter5,
4 letter words:
grip7,
ping7,
prig7,
pung7,
pein6,
pent6,
peri6,
pert6,
pier6,
pine6,
pint6,
pirn6,
ptui6,
punt6,
pure6,
puri6,
purr6,
putt6,
ripe6,
tipi6,
trip6,
gent5,
genu5,
gien5,
girn5,
girt5,
gite5,
grin5,
grit5,
grue5,
ring5,
rung5,
ting5,
trig5,
trug5,
tung5,
urge5,
etui4,
inti4,
nett4,
nine4,
nite4,
rein4,
rent4,
rite4,
ruer4,
ruin4,
rune4,
runt4,
tent4,
tern4,
tier4,
tine4,
tint4,
tire4,
titi4,
tret4,
true4,
tune4,
turn4,
unit4,
3 letter words:
gip6,
peg6,
pig6,
pug6,
nip5,
pen5,
per5,
pet5,
pie5,
pin5,
pit5,
piu5,
pun5,
pur5,
put5,
rep5,
rip5,
tip5,
tup5,
urp5,
eng4,
erg4,
gen4,
get4,
gie4,
gin4,
git4,
gnu4,
gun4,
gut4,
neg4,
reg4,
rig4,
rug4,
teg4,
tug4,
ern3,
err3,
inn3,
ire3,
net3,
nit3,
nun3,
nut3,
rei3,
ret3,
rin3,
rue3,
run3,
rut3,
ten3,
tet3,
tie3,
tin3,
tit3,
tui3,
tun3,
tut3,
urn3,
ute3,
2 letter words:
pe4,
pi4,
up4,
en2,
er2,
et2,
in2,
it2,
ne2,
nu2,
re2,
ti2,
un2,
ut2,