sincerely vs unpretentiously

sincerely

adv
  • In a sincere or earnest manner; honestly. 

  • A conventional formula for ending a letter, used when the salutation addresses the person for whom the letter is intended by his or her name. 

unpretentiously

adv
  • In a manner that is not pretentious; sincerely, without affectation. 

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