SINCERELY /sɪnˈsɪəli/ ► audio Scrabble 14 Words With Friends 16 Definition adverb with sincerity. — synonyms: unfeignedly, truly adverb written formula for ending a letter. — synonyms: sincerely_yours Examples “I sincerely hope they make it home safely.” See all 227 words you can make from SINCERELY → 9-letter words Words starting with S Words ending with Y ← Unscramble different letters