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We found 40 dictionaries with English definitions that include the word insidious:
Click on the first link on a line below to go directly to a page where "insidious" is defined.

General (32 matching dictionaries)

1. insidious: Merriam-Webster.com [home, info]
2. insidious: Oxford Learner's Dictionaries [home, info]
3. insidious: American Heritage Dictionary of the English Language [home, info]
4. insidious: Collins English Dictionary [home, info]
5. insidious: Vocabulary.com [home, info]
6. insidious: Macmillan Dictionary [home, info]
7. Insidious, insidious: Wordnik [home, info]
8. insidious: Cambridge Advanced Learner's Dictionary [home, info]
9. insidious: Wiktionary [home, info]
10. insidious: Webster's New World College Dictionary, 4th Ed. [home, info]
11. insidious: V2 Vocabulary Building Dictionary [home, info]
12. insidious: The Wordsmyth English Dictionary-Thesaurus [home, info]
13. insidious: Infoplease Dictionary [home, info]
14. insidious: Dictionary.com [home, info]
15. insidious: Online Etymology Dictionary [home, info]
16. insidious: UltraLingua English Dictionary [home, info]
17. insidious: Cambridge Dictionary of American English [home, info]
18. Insidious (Nightrage album), Insidious (film), Insidious (film series), Insidious: Wikipedia, the Free Encyclopedia [home, info]
19. Insidious: Online Plain Text English Dictionary [home, info]
20. insidious: Webster's Revised Unabridged, 1913 Edition [home, info]
21. insidious: Rhymezone [home, info]
22. Insidious: AllWords.com Multi-Lingual Dictionary [home, info]
23. insidious: Webster's 1828 Dictionary [home, info]
24. insidious: Hutchinson's Dictionary of Difficult Words [home, info]
25. insidious: Free Dictionary [home, info]
26. insidious: Hutchinson Dictionaries [home, info]
27. insidious: Mnemonic Dictionary [home, info]
28. insidious: WordNet 1.7 Vocabulary Helper [home, info]
29. insidious: LookWAYup Translating Dictionary/Thesaurus [home, info]
30. insidious: Dictionary/thesaurus [home, info]

Business (1 matching dictionary)

31. insidious: Legal dictionary [home, info]

Computing (1 matching dictionary)

32. insidious: Encyclopedia [home, info]

Medicine (5 matching dictionaries)

33. insidious: online medical dictionary [home, info]
34. Insidious: MEDLINE plus Illustrated Medical Encyclopedia [home, info]
35. insidious: Medical dictionary [home, info]
36. Insidious: University of Maryland Glossary of Medical Terms [home, info]
37. Insidious: WeMove Glossary of Terms [home, info]

Slang (1 matching dictionary)

38. insidious: Urban Dictionary [home, info]

(Note: See insidiousness for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (insidious) ▸ adjective:  intended to entrap ▸ adjective:  beguiling but harmful ("Insidious pleasures") ▸ adjective:  working or spreading in a hidden and usually injurious way ("Glaucoma is an insidious disease") ▸ Also see insidiousness ▸ Word origin ▸ Words similar to insidious ▸ Usage examples for insidious ▸ Idioms related to insidious (New!) ▸ Popular nouns described by insidious ▸ Words that often appear near insidious ▸ Rhymes of insidious ▸ Invented words related to insidious