I always liked frump and frumpy...it's one of those words I just enjoy saying.

This is from Bartleby/American heritage:

frump

PRONUNCIATION: frmp
NOUN: 1. A girl or woman regarded as dull, plain, or unfashionable. 2. A person regarded as colorless and primly sedate.
ETYMOLOGY: Possibly short for Middle English frumple, wrinkle, from Middle Dutch verrompelen, to wrinkle : ver-, completely; see per1 in Appendix I + rompelen, to wrinkle.
OTHER FORMS: frumpi·ly —ADVERB
frumpi·ness —NOUN
frumpy —ADJECTIVE