dowdiest
dow-di-est
adjective
The most unfashionable, plain, and dull in appearance, especially of a woman or her clothes.
"She wore the dowdiest hat to the royal garden party."
Thesaurus
Synonyms: Baron Hugh Caswall Tremenheere Dowding, Dowdy, Dowding, Hugh Dowding, styleless, unstylish, pandowdy, frumpish, unfashionable, frumpy