undehtand
verb
Infinitive: undehtand
3rd person: undehtandf, undehtands
Present: undehtanding
Gerund: undehtanding
Past: undehtood
Perfect: undehtood
A mispronounced (speech-defective) form of the word "understand".
Examples:
—Do you understand?
—Undehtood.
—Not a word at home!
—Ou whhd! (Source: J∙ Okram - The Mystery of the Rammed Key.)