plastic vs unimpressionable

plastic

adj
  • fake; insincere. 

  • Of or pertaining to the inelastic, non-brittle, deformation of a material. 

  • Capable of being moulded; malleable, flexible, pliant. 

  • Capable of adapting to varying conditions; characterized by environmental adaptability. 

  • Inferior or not the real thing. 

  • Made of plastic. 

noun
  • An instance of plastic surgery. 

  • Credit or debit cards used in place of cash to buy goods and services. 

  • insincerity; fakeness, or a person who is fake or arrogant, or believes that they are better than the rest of the population. 

  • A synthetic, solid, hydrocarbon-based polymer, whether thermoplastic or thermosetting. 

unimpressionable

adj
  • Not impressionable. 

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