Words I Learned From Reading David Foster Wallace

indurate (adj.) -physically or morally hardened

“First off, the avoid-terminal-prepositions rule is the invention of one Fr. R. Lowth, an 18th-century British preacher and indurate pedant who did things like spend scores of pages arguing for hath over the trendy and degenerate has.”

Wallace, David Foster. “Authority and American Usage.” Consider the Lobster. New York: Back Bay Books, 2007. p 99.