We found 34 dictionaries that define the word sincere:

General (28 matching dictionaries)

1. sincere: Longman Dictionary of Contemporary English
2. sincere: Merriam-Webster
3. sincere: Oxford Learner's Dictionaries
4. sincere: American Heritage Dictionary of the English Language
5. sincere: Collins English Dictionary
6. sincere: Vocabulary.com
7. Sincere, sincere: Wordnik
8. sincere: Cambridge Advanced Learner's Dictionary
9. Sincere, sincere: Wiktionary
10. sincere: Webster's New World College Dictionary, 4th Ed.
11. sincere: The Wordsmyth English Dictionary-Thesaurus
12. sincere: Infoplease Dictionary
13. sincere: Dictionary.com
14. sincere: Online Etymology Dictionary
15. sincere: Cambridge Essential American English Dictionary
16. Sincere (album), Sincere (song), Sincere: Wikipedia, the Free Encyclopedia
17. Sincere: Online Plain Text English Dictionary
18. sincere: Webster's Revised Unabridged, 1913 Edition
19. sincere: Rhymezone
20. sincere, sincre: AllWords.com Multi-Lingual Dictionary
21. sincere: Webster's 1828 Dictionary
22. sincere: FreeDictionary.org
23. sincere: Mnemonic Dictionary
24. Sincere: The Word Detective
25. sincere: TheFreeDictionary.com
26. sincere: Wikimedia Commons US English Pronunciations

Business (1 matching dictionary)

27. sincere: Legal dictionary

Computing (1 matching dictionary)

28. sincere: Encyclopedia

Medicine (1 matching dictionary)

29. online medical dictionary (No longer online)

Miscellaneous (2 matching dictionaries)

30. SINCERE: Acronym Finder
31. sincere: Idioms

Slang (1 matching dictionary)

32. sincere: Urban Dictionary

(Note: See sincerely as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Genuine; meaning what one says or does; heartfelt. ▸ adjective:  Meant truly or earnestly. ▸ adjective:  (archaic) clean; pure ▸ noun:  A male given name. Similar: honest, bona fide, in earnest, wholehearted, true, whole-souled, earnest, heart-whole, cordial, dear, more... Opposite: insincere, dishonest, deceitful, disingenuous, untruthful Types: honest, true, authentic, legit, real, more... Phrases: Sincere McCormick, Salvatore Sincere, honest and sincere, not sincere, very sincere, more... Colors:     sky blue,     light blue,     soft pink,     lavender,     pale yellow, more... ▸ Word origin ▸ Words similar to sincere ▸ Usage examples for sincere ▸ Idioms related to sincere ▸ Wikipedia articles (New!) ▸ Popular adjectives describing sincere ▸ Popular nouns described by sincere ▸ Words that often appear near sincere ▸ Rhymes of sincere ▸ Invented words related to sincere