frivolous vs uptight

frivolous

adj
  • Silly, especially at an inappropriate time or in an inappropriate manner. 

  • Having no reasonable prospect of success because its claim is without merit, lacking a supporting legal or factual basis, while the filing party is, or should be, aware of this. 

  • Of little weight or importance; not worth notice; slight; trivial. 

uptight

adj
  • Unfriendly and rude. 

  • Excessively concerned with rules and order, always serious. 

  • Emotionally repressed; nervous and tense. 

  • Sexually repressed. 

noun
  • An uptight person. 

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