tottering vs unhale

tottering

adj

  • Unsteady, precarious or rickety. 

  • Unstable, insecure or wobbly. 

noun

  • The movement of one who totters. 

unhale

adj

  • Unsound; not hale; unhealthy. 

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