havering vs iffy

havering

adj

  • Hesitant; indecisive. 

  • Long-winded 

noun

  • Indecision, indecisive behaviour. 

iffy

adj

  • Uncertain or chancy. 

  • Of dubious authenticity, legitimacy or legality. 

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