1) Disagreeable woman 2) Dowdy dame 3) Dowdy dowager 4) Dowdy dresser 5) Dowdy one 6) Dowdy person 7) Dowdy sort 8) Dowdy type 9) Dull girl 10) Good makeover candidate 11) No fashion plate 12) No femme fatale 13) Not a stylish dresser 14) Shabby individual 15) Shabby sort 16) Unfashionable lass 17) Unfashionable one 1) Dowd 
• (n.) A cross, old-fashioned person; esp., an old woman; a gossip. • (n.) A contemptuous speech or piece of conduct; a gibe or flout. • (v. t.) To insult; to flout; to mock; to snub.
Frump noun 1. A contemptuous speech or piece of conduct; a gibe or flout. [ Obsolete] Beau. & Fl. 2. A cross, old-fashioned person; esp., an old woman; a gossip. [ Colloq.] Halliwell. Frump transitive verb [ Confer Prov. English frumple to wrinkle, ruffle, Dutch frommelen .] To insult; to flout; to mock; to snub. [ Obsolete] Beau. & Fl. 
[n] - a dull unattractive unpleasant girl or woman
a person who is dowdy, drab, and unattractive. · a dull, old-fashioned person.