From Acersecomic (a person whose hair has never been cut) to Zugzwang (a position in which any decision or move will result in problems), Project Twins' A-Z of Unusual Words illustrates the English language's forgotten vocabulary. These words probably won't show up on the SAT, but they're fun to learn nonetheless.
Acersecomic - A person whose hair has never been cut.
Biblioclasm - The practice of destroying, often ceremoniously, books or other written material and media.
Cacodemonomania - The pathological belief that one is inhabited by an evil spirit.
Dactylion - An anatomical landmark located at the tip of the middle finger.
Enantiodromia - The changing of something into its opposite.
Fanfaronade - Swaggering; empty boasting; blustering manner or behavior; ostentatious display.
Gorgonize - To have a paralyzing or mesmerizing effect on: Stupify or Petrify