frump vs slummock

frump

noun
  • A frumpy person, somebody who is unattractive, drab or dowdy. 

  • Unattractive, dowdy clothes. 

slummock

noun
  • A slovenly person 

verb
  • To behave awkwardly or clumsily 

  • To behave lazily or indolently 

How often have the words frump and slummock occurred in a corpus of books? (source: Google Ngram Viewer )