havering vs vacillant

havering

adj

  • Long-winded 

  • Hesitant; indecisive. 

noun

  • Indecision, indecisive behaviour. 

vacillant

adj

  • Vacillating; wavering; fluctuating; irresolute. 

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