Down through the years, logologists have sought the elusive word attaining one of the many goals of verbal perfection: displaying all six of the vowels (A, E, I, O, U, and Y) in precisely the reverse of their alphabetical order. Until recently, the problem remained unsolved, except for a coined word of inferior quality - BY-QUODLIBETAL, defined as "quodlibetal, or purely academic, in a derived or accidental manner."
Wachtel, Alan L.
"Y U O I E A,"
Word Ways: Vol. 1
, Article 6.
Available at: http://digitalcommons.butler.edu/wordways/vol1/iss4/6