From Gulliver's Travels by J. Swift "Brobdingnagian" and "Lilliputian" are (of course) words for very large and very small respectively.

Does anyone care to take a guess at what the appropriate adjectival forms for "Houyhnhnm" and "Laputa" might be?

In case your memory needs to be jogged, Houyhnhnm is the land of the loathsome yahoos ruled by a race of horses endowed with superior powers of reasoning.

Laputa is the floating island where the inhabitants are maniacally devoted to a life of fantastically impractical projects for the advancement of speculative knowledge.

I would go with "Houyhnhnmous wisdom" and "Laputan absurdity" myself. Maybe "Laputanesque".

What do you think?