Words formed from any letters in healthfulnesses plus optional blank

c -

unteaches₁₆

r -

urethanes₁₃

u -

usualness₁₃

v -

valueless₁₆

w -

unswathes₁₆

waenesses₁₃

wetnesses₁₃

wheelless₁₆

y -

uselessly₁₄