In searching for "mirifical" I found a list of Peacock words, and have hijacked a few:

uncommon words in the works of Peacock

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WORD MEANING SOURCE

accinge (v.) gird C.C., xviii
adhibit (v.) apply, employ H.H., v


adoperation* (n.) application, use M.


agrestic (adj.) rural M.o.E., vi


antiperistatical (adj.) contrary to surroundings, antagonistic N.A., viii


antithalian* (adj.) non-comic N.A., iv


appetency (n.) desire, propensity M.o.E., xi


assation (n.) roasting H.H., xiii


atrabilarious (adj.) melancholy, ill-tempered N.A., i


autochthonous (adj.) home-grown, aboriginal M.o.E., vi


compotatory (adj.)* of drinking together G.G.,


conglobated (ppl.) gathered into a ball G.G.,


conterminal (adj.)* with a common border C.C., ix


contund (v.) pummel, pound, bruise C.C., viii


digladiation (n.) argument C.C., x


dyslogistic (adj.) ill-sounding, opprobrious C.C., viii


eleutherarch (n.) ruler of secret society N.A., ii


elixion (n.) boiling H.H., xiii