irresolute vs wavering

irresolute

adj
  • Undecided or unsure how to act. 

  • Indecisive or lacking in resolution. 

wavering

adj
  • Being in doubt; indecisive. 

  • Fluctuating, uncertain, undetermined, unsteady. 

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