... and now for the muse

Owed Two A Spell Chequer
Eye halve a spelling chequer,
it came with my pea sea.
It plainly marques, four my revue,
miss steaks eye kin knot sea.

Eye strike a key and type a word
and weight four it two say,
Weather eye am wrong oar write
it shows me strait a weigh.

As soon as a mist ache is maid,
it nose bee fore two long.
And eye can put the error rite
it's rare lea ever wrong.

Eye have run this poem threw it,
I am shore your pleased two no.
Its letter perfect awl the weigh,
my chequer tolled me sew.

This oft passed on poem came to Casey via a subscription joke newsletter. Seen it before but note it here because I'm trying to trace a very cool piece of writing that has a whole lot of word usages in it that would be the opposite of the counterpart word - except that that the counterpart doesn't have an opposite. Pretty much the only word I recall was chalant (being the opposite of nonchalant) and I would love to find it again as it was very clever. Any ideas?