costing an arm and a leg vs posh

costing an arm and a leg

posh

adj
  • Associated with the upper classes. 

  • Stylish, elegant, exclusive (expensive). 

  • Snobbish, materialistic, prejudiced, under the illusion that one is better than everyone else. 

noun
  • fragments produced by an impact 

  • slush 

verb
  • To make posh, or posher. 

intj
  • An exclamation expressing derision. 

How often have the words costing an arm and a leg and posh occurred in a corpus of books? (source: Google Ngram Viewer )