We found 28 dictionaries that define the word perfidious:

General (24 matching dictionaries)

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

Business (1 matching dictionary)

23. perfidious: Legal dictionary

Computing (1 matching dictionary)

24. perfidious: Encyclopedia

Miscellaneous (1 matching dictionary)

25. perfidious: A Word A Day

Slang (1 matching dictionary)

26. perfidious: Urban Dictionary

(Note: See perfidiously as well.)

Definitions from Wiktionary ( ) ▸ adjective:  Of, pertaining to, or representing perfidy; disloyal to what should command one's fidelity or allegiance. Similar: treacherous, unfaithful, Punic, perjurious, foelike, faithy, adulterous, affiliatory, falsificatory, dutiful, more... Opposite: trustworthy, loyal, faithful Phrases: Perfidious Albion, more... Colors:     gray,     murky green,     dull brown,     tarnished silver,     faded yellow, more... ▸ Words similar to perfidious ▸ Usage examples for perfidious ▸ Idioms related to perfidious ▸ Wikipedia articles (New!) ▸ Popular nouns described by perfidious ▸ Words that often appear near perfidious ▸ Rhymes of perfidious ▸ Invented words related to perfidious