Preston Reynolds, a young man from Madison, Wisconsin, kept a light-hearted journal of a two-week canoe trip he made with three friends down the Wisconsin and Mississippi Rivers in August 1903. Excerpts were recently published in Wisconsin Magazine of History. Reynolds twice uses the word “hippicanoreous”, which has stumped the present-day editors of the journal, not appearing in Merriam-Webster or the OED.

Here is the word in context:

From the context, the word appears to mean “spare” or “depleted”.

The other use:

Here the word seems to mean either “relieved” or “celebratory”.

Any guesses on the etymology of this word? I’m guessing it’s Reynolds’ own pun on the Greek hippopotamos (river horse) and the word “canoe”. But that doesn’t explain the usage.

Well an on-line search shows “canoreous” closely resembles “canorous” which is "Richly melodious; tuneful. And Hippi closely resembles “Horse” in greek.

So I would guess it had something to do with the sound of a horse. Maybe they whooped it up like a horse; or the beans made them fart like a horse.