Crassitude is a noun that refers to extreme coarseness or insensitivity. This word is spelled `ˈkræsɪtjuːd` in IPA phonetic transcription. The first syllable is pronounced with a short "a" sound, followed by a voiceless "s" and a long "i" sound. The second syllable is pronounced with a "ch" sound, and the final syllable has a long "oo" sound followed by a "d" sound. While "crassitude" isn't commonly used, it can be a useful word when describing someone's lack of sensitivity or tact.
Grossness; thickness; stupidity.
Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.