Definition of hellness in English:

hellness

noun

rare
  • With possessive adjective, as "his hellness": a (mock) title of respect given to a diabolical character.

Origin

Early 17th century; earliest use found in Joshua Sylvester (d. 1618), poet and translator. From hell + -ness, after highness.

Pronunciation

hellness

/ˈhɛlnəs/