We found 38 dictionaries that define the word treason:

General (25 matching dictionaries)

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

Business (9 matching dictionaries)

24. treason: Merriam-Webster Legal Dictionary
25. treason: Webster's New World Law Dictionary
26. Duhaime's Canadian law dictionary (No longer online)
27. treason: Law.com Dictionary
28. Everybody's Legal Dictionary (No longer online)
29. THE 'LECTRIC LAW LIBRARY'S REFERENCE ROOM (No longer online)
30. Glossary of Legal Terms (No longer online)
31. Bouvier's Law Dictionary 1856 Edition (No longer online)
32. treason: Legal dictionary

Computing (1 matching dictionary)

33. treason: Encyclopedia

Miscellaneous (1 matching dictionary)

34. Political (No longer online)

Slang (1 matching dictionary)

35. treason: Urban Dictionary

Tech (1 matching dictionary)

36. DOD Dictionary of Military Terms (No longer online)

(Note: See treasons as well.)

Definitions from Wiktionary ( ) ▸ noun:  The crime of betraying one’s own country. ▸ noun:  An act of treachery, betrayal of trust or confidence. Similar: high treason, treachery, lese majesty, perfidy, betrayal, traitorousness, subversiveness, traitorism, trahison, traitordom, more... Opposite: loyalty Types: high treason, petty treason, more... Phrases: high treason, petty treason, Gunpowder Treason, constructive treason, petit treason, more... Adjectives: high, constructive, petty, domestic, petit, moral, open, foul, greatest, bloody, double Colors:     crimson,     scarlet,     blood red,     burgundy,     maroon, more... ▸ Word origin ▸ Words similar to treason ▸ Usage examples for treason ▸ Idioms related to treason ▸ Wikipedia articles (New!) ▸ Popular adjectives describing treason ▸ Words that often appear near treason ▸ Rhymes of treason ▸ Invented words related to treason