ob|tu|si|ty

ob|tu|si|ty «uhb TOO suh tee, -TYOO-», noun, plural -ties.

1. insensibility; dullness: »

obtusity of the ear.

2. Figurative. folly; stupidity: »

[His] purpose in parading this gallery of prophets is not to entertain us with the obtusities of our forebears but to save us from our own (New Yorker).