[1] : The Collaborative International Dictionary of English v.0.48

frump \frump\, v. t. cf. prov. e. frumple to wrinkle, ruffle,
   d. frommelen.
   to insult; to flout; to mock; to snub. obs. --beau.  fl.
   1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

frump \frump\, n.
   1. a contemptuous speech or piece of conduct; a gibe or
      flout. obs. --beau.  fl.
      1913 webster

   2. a cross, old-fashioned person; esp., an old woman; a
      gossip. colloq. --halliwell.
      1913 webster

[3] : WordNet (r) 2.0

frump
     n : a dull unattractive unpleasant girl or woman; "she got a
         reputation as a frump"; "she's a real dog" syn: dog
see also:
dog 

[4] : Moby Thesaurus II by Grady Ward, 1.0

31 moby thesaurus words for "frump":
   beldam, crone, dame, dowager, drab, grandam, grandmother, granny,
   hag, litterbug, old battle-ax, old dame, old girl, old granny,
   old lady, old trot, old wife, old woman, pig, schlep, schlump,
   slattern, slob, sloppy joe, sloven, slut, swine, trollop, trot,
   war-horse, witch

Frump >> F Words
Frump, definition of term: Frump
frump_pag1.html