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.

You can buy a postcard book of these prints from the Project Twins shop and see the full esoteric alphabet on their site.

A-Z of Unusual Words [Project Twins via Brain Pickings]

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