regardless vs undisirregardless

regardless

prep
  • Synonym of regardless of; paying no attention to 

adj
  • despite everything; despite the situation 

  • Having no regard; heedless; careless. 

adv
  • Without attention to warnings or indications of bad consequences. 

undisirregardless

adv
  • Synonym of regardless 

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