Natatory

Meaning: as a noun, this means a place to swim (generally a pool of some kind, although not always) and as an adjective it applies to things of, or relating to, swimming.

Usefulness: 1 ("Out the back we have our humble natatory." "Urquhart Bluff Beach* seems natatory, but has some dangerous rips." And then there's all the things it could have been applied to during the Olympics: "A dearth of medals natatory has disappointed the nation.")

Urquhart Bluff Beach: not natatory.

Logofascination: 1

Hippodramatic

Meaning: the dramatic arts associated with a circus; the drama of a circus.

Usefulness: 1 (This word suggests hysteria and bathos and a grand fuss. Asking someone to stop all the hippodramatics, or describing an event as terribly hippodramatic, is self-explanatory.)

Logofascination: 2 (Despite the hippo-, this doesn't seem to have arisen from a horse link - it's possibly from association or confusion with hippodromes. Hippodramas exist, but are apparently dramas featuring horses.)