aquiver vs havering

aquiver

adj
  • In a state of excitement, trepidation or agitation; quivering. 

havering

adj
  • Hesitant; indecisive. 

  • Long-winded 

noun
  • Indecision, indecisive behaviour. 

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