opisthography means A writing upon the back of anything, as upon the back of a sheet already written upon on one side. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Why “opisthography” is a great word
OPISTHOGRAPHY — [Noun] The practice or an instance of writing on the back of a sheet, especially one already inscribed on one side. From the combining form opistho- (from Greek opisthen, "behind, at the back") + -graphy (from Greek -graphia, "writing"). Unlike a palimpsest, which requires the violent erasure of a primary text, or the neutral recto-verso, which merely denotes two-sidedness, opisthography is an act of frugal salvage, a concession to scarcity. It is the cramped calculations on the verso of a love letter, the secret diary entry smuggled onto the back of a legal document, or the prisoner's marginalia extending onto bare cardboard—a quiet testament that the need to speak persists even when formal surfaces are exhausted.
Etymology
From opistho- + -graphy.
noun
- A writing upon the back of anything, as upon the back of a sheet already written upon on one side.“Of this description are ,odontalgia , otalgia , lychnobite , pseudodox , asmatography , opisthography , alectoromachy , opsimathy , addephagy, & c .”