devoted vs lackadaisical

devoted

adj
  • Vowed; dedicated; consecrated. 

  • Zealous; characterized by devotion. 

  • Strongly emotionally attached; very fond of someone or something. 

lackadaisical

adj
  • Showing no interest, vigor, determination, or enthusiasm. 

  • Lazy; slothful; indolent. 

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