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Sick enough that you feel miserable but not so bad that you can stay home from work or avoid other obligations.

This was someone's name but it sounded to me like it fit the new definition I gave it. It has nothing to do with that person in particular.
"I would have stayed home today but I'm only feeling grundish."
by Uncle Rich January 02, 2012
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2
language of morons; noises made when an idiot or oaf is baffled and can't think of what to say; usually accompanied by drooling.
I can't understand the grundish coming out of his mouth.
by GO RAVENS November 02, 2004
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