backboneless vs namby-pamby

backboneless

adj
  • Cowardly, spineless. 

  • Without a backbone; invertebrate. 

namby-pamby

adj
  • Lacking vigor or decisiveness; spineless; wishy-washy. 

  • Insipid and sentimental. 

verb
  • To coddle. 

noun
  • One who is insipid, sentimental, or weak. 

  • Talk or writing which is weakly sentimental or affectedly pretty. 

How often have the words backboneless and namby-pamby occurred in a corpus of books? (source: Google Ngram Viewer )