Definition: Agraphia (pronounced: ey-graf-ee-uh); Greek; noun
1. A cerebral disorder characterized by total or partial inability to write.
Why I love this word:
When I read this word, my initial thought to the meaning was writer's block. But apparently agraphia is an acquired neurological disorder causing a loss in the ability to communicate through writing, either due to some form of motor dysfunction or an inability to spell. However, I think all writers go through a period in their writing days when they forget how to spell certain words or they can't even think of the words to put on a page.
Photograph by Jonathan Schoonover