Words formed from any letters in supercows plus optional blank

a -

upsoars₁₁

g -

upgrows₁₆

h -

uphroes₁₃

i -

uprises₁₁

wussier₁₁

k -

workups₁₈

n -

worsens₁₁

o -

woopses₁₃

t -

worsets₁₀

u -

uprouse₁₂

w -

wowsers₁₃