The act of intentionally misspelling a word using far too many letters. The misspelled word is usually unpronounceable. Overspelling is often used to exaggerate words that are already hard to spell. It is also used to let the reader know that the writer is admitting they do not know the correct spelling, an informal substitution of the (sp) notation.
"I think that sports car was a Koeniggseggnssenggen," where 'Koeniggseggnssenggen' is considered overspelling, as opposed to, "I think that sports car was a Koeniggsegg(sp?)"

"I could seriously use some caffeininne, I am so tired right now."
by bembleton August 14, 2007
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