inane vs on-the-ball

inane

noun

  • That which is void or empty. 

adj

  • Purposeless; pointless 

  • Lacking sense or meaning (often to the point of boredom or annoyance) 

  • Lacking sense or meaning (often to the point of boredom or annoyance) (lacking sense): 

on-the-ball

How often have the words inane and on-the-ball occurred in a corpus of books? (source: Google Ngram Viewer )