s, a, e, f, l, n, h, t, u are letters that make 'unhealthfulness'
healthfulness, HF, he, Ful, UN, He, NH, health, Ea, ALT, SS, unhealthful, healthful, AL, NE, ness, Al, Es, Hf, Ne, Th, heal are words within 'unhealthfulness'
1 possible definitions for 'unhealthfulness'
Under this definition, unhealthfulness is a noun and has the following properties:
healthfulness has the opposite meaning of unhealthfulness
'unhealthfulness' can be a type of unwholesomeness, morbidness, morbidity.
insalubrity, insalubriousness are types of 'unhealthfulness'.
unhealthful, unhealthy, unsanitary, insanitary, insalubrious are derivatives of 'unhealthfulness'.