We found 32 dictionaries that define the word sull'en:

General (27 matching dictionaries)

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

Art (1 matching dictionary)

26. Shakespeare Glossary (No longer online)

Business (1 matching dictionary)

27. sullen: Legal dictionary

Computing (1 matching dictionary)

28. sullen: Encyclopedia

Medicine (1 matching dictionary)

29. online medical dictionary (No longer online)

Slang (1 matching dictionary)

30. sull'en, sullen: Urban Dictionary

(Note: See sullenly as well.)

Definitions from Wiktionary (sullenly) ▸ adverb:  In a sullen manner. ▸ Also see sullenly Similar: moody, ill-natured, morose, glum, dour, glowering, threatening, dark, heavy, sour, more... Opposite: cheerful, happy, jolly, merry, upbeat Phrases: A Winged Victory for the Sullen, sullen look, in a sullen mood, look sullen, opposite of sullen, more... Adjectives: little, same, first, low, awful, curious, long, certain, few, anguish, full Colors:     charcoal,     slate gray,     midnight blue,     deep maroon,     stormy gray, more... ▸ Word origin ▸ Words similar to sull'en ▸ Usage examples for sull'en ▸ Idioms related to sull'en ▸ Wikipedia articles (New!) ▸ Words that often appear near sull'en ▸ Rhymes of sull'en ▸ Invented words related to sull'en