in earnest vs singly

in earnest

adv
  • Having a sincere intent. 

  • With considerable commitment, determination, or effect; significantly. 

adj
  • Sincere; determined; truthful. 

singly

adv
  • Honestly; sincerely; simply. 

  • Individually; particularly; severally. 

  • Without partners, companions, or associates; single-handed. 

  • In a single or unaccompanied manner; without a companion. 

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