Words formed from any letters in ultrarare plus optional blank

b -

tuba₈

tube₈

d -

trad₅

turd₆

e -

tree₄

f -

tref₇

tufa₈

turf₈

g -

trug₇

urge₇

k -

trek₈

turk₉

m -

tram₇

n -

tuna₆

tune₆

turn₆

ulan₇

ulna₇

o -

tore₄

torr₄

tour₅

p -

trap₇

s -

tsar₄

ursa₅

user₅

utas₅

t -

tret₄

v -

ulva₁₀

uvea₉

vale₉

vara₈

vatu₉

veal₉

vela₉

vera₈

vert₈

w -

twae₇

wale₈

ware₇

wart₇

waul₉

waur₈

weal₈

wear₇

welt₈

wert₇

y -

tray₆

trey₆

tyer₆

tyre₆

yare₆

year₆

yule₈

yurt₇

z -

tzar₁₃

zeal₁₄

zeta₁₃