sincerely in WordNet English dictionary

1. with sincerity; without pretense
   "she praised him sincerely for his victory"; "was unfeignedly glad to see his old teacher"; "we are truly sorry for the inconvenience"
   sincerely  unfeignedly  truly  sincerely  unfeignedly  truly 
   
2. written formula for ending a letter
   sincerely  sincerely yours  sincerely  sincerely yours