I’m looking for the definition of this word at both Yourdictionary and dictionary.com but I can’t find it…

The closest I can find is epiphanic:

        http://www.thefreedictionary.com/Epiphonic

A quick internet search I have made reveals the following meanings:

Epiphone/epiphone [noun]

1. A type of electric guitar.

2. The name of the company that manufactures such guitars.

epiphonic [adjective]

1. Relating to Epiphone guitars or products.

2. Alternative form of “epiphanic”.

Epiphone is a brand of guitar made by Gibson. The word is clearly a play on the words epiphany and phonic. I don’t see how epiphonic could be anything more than a confused misspelling. Guitar buff don’t refer to their Epiphones as being epiphonic. It would be like saying that a Beetle is Volkswagonish.

Epiphanic is the adjectival form of epiphany, as in “After an epiphanic moment, he decided to become a monk.”

Is there such a word as Kudzuish?

There’s cud chewish, which describes a cow that’s prone to do so.

Do cows eat and chew Kudzu? That would be a solution for your problem. And think of the methane in the cow cud-chewed paddies made of kudzu.