lip-smacking vs lip-smackingly

lip-smacking

adv

  • Very. 

noun

  • The act of smacking one's lips 

adj

  • Tasty; appetizing. 

lip-smackingly

adv

  • very. 

  • With audibly expressed enjoyment. 

How often have the words lip-smacking and lip-smackingly occurred in a corpus of books? (source: Google Ngram Viewer )