lethealgia
n.— «Which I think turned out quite nicely—lethealgia is a neologism I coined, derived from the Greek Lethe, the River of Oblivion in Hades, which is sometimes used to indicate forgetfulness, and algia from the Greek word algos, pain.…Therefore (at least according to me) we now have lethealgia, the unpleasant feeling associated with having forgotten something.» —“Lethealgia Relief!” by Terry Oglesby Possumblog (Trussville, Alabama) May 5, 2006. (source: Double-Tongued Dictionary)
Further reading
Katherine from Allentown, Pennsylvania, remembers her grandmother teaching her to say Lucky lucky white horse, ding ding ding! whenever a white horse pulling a delivery wagon passed her house. After each ding, they were supposed to lick their left...
Andy from Kensington, Maryland, wonders about the word sycophant. Among the ancient Greeks, a blackmailer or someone who maliciously prosecuted others was a sykophantēs, a word that comes from the Greek sykon, meaning “fig,” and phainein, “to show.”...