We found 28 dictionaries that define the word decease:

General (22 matching dictionaries)

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

Business (1 matching dictionary)

23. decease: Legal dictionary

Computing (1 matching dictionary)

24. decease: Encyclopedia

Medicine (3 matching dictionaries)

25. decease: Merriam-Webster Medical Dictionary
26. Decease: MedTerms.com Medical Dictionary
27. Decease: Drug Medical Dictionary

Slang (1 matching dictionary)

28. decease: Urban Dictionary

(Note: See deceased as well.)

Definitions from Wiktionary (decease) ▸ noun:  (formal) Death, departure from life. ▸ verb:  (now rare) To die. Similar: death, expire, perish, pass away, exit, go, die, demise, decession, declension, more... Opposite: health, wellness, vitality, soundness Types: cancer, tuberculosis, leprosy, malaria, syphilis, cholera, smallpox, measles, more... Adjectives: own, sudden, premature, untimely, early, lamented, recent, actual, speedy, unexpected, immediate Colors:     black,     gray,     white,     dark purple,     maroon, more... ▸ Word origin ▸ Words similar to decease ▸ Usage examples for decease ▸ Idioms related to decease ▸ Wikipedia articles (New!) ▸ Popular adjectives describing decease ▸ Words that often appear near decease ▸ Rhymes of decease ▸ Invented words related to decease