a person that is extremely frumpy; that makes no attempt to dress nice or have a pleasant appearance.
Tim's wife is definitely a frumpapotamus, she looks like she has been hit by a pillow case full of bars of soap.
by nickytheninja September 30, 2011
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At the restaurant the other day a frumpopotamus was spotted devouring a large salad, while talking through the entire meal.
by Mr Uggface April 8, 2010
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