fearful vs spineless

fearful

adj
  • Tending to fear; timid. 

  • Frightening; causing fear. 

adv
  • Extremely; fearfully. 

spineless

adj
  • Cowardly, uncourageous; lacking character. 

  • Having no spines, prickles, or thorns. 

  • Having no spinal column. 

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