badass vs unimpressive

badass

adj
  • Having an extreme appearance, attitude, or behavior that is considered admirable. 

  • Belligerent and troublesome. 

noun
  • A person considered impressive due to courage, skill, daring, audacity, and/or toughness. 

  • A belligerent or mean person; a person with an unpleasantly extreme appearance, attitudes, or behavior. 

unimpressive

adj
  • lacking the ability to impress, inability to produce an impression. 

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