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We found 31 dictionaries with English definitions that include the word threaten:
Click on the first link on a line below to go directly to a page where "threaten" is defined.

General (28 matching dictionaries)

1. threaten: Merriam-Webster.com [home, info]
2. threaten: Oxford Dictionaries [home, info]
3. threaten: American Heritage Dictionary of the English Language [home, info]
4. threaten: Collins English Dictionary [home, info]
5. threaten: Vocabulary.com [home, info]
6. threaten: Macmillan Dictionary [home, info]
7. Threaten, threaten: Wordnik [home, info]
8. threaten: Cambridge Advanced Learner's Dictionary [home, info]
9. Threaten: Wiktionary [home, info]
10. threaten: Webster's New World College Dictionary, 4th Ed. [home, info]
11. threaten: The Wordsmyth English Dictionary-Thesaurus [home, info]
12. threaten: Infoplease Dictionary [home, info]
13. threaten: Dictionary.com [home, info]
14. threaten: UltraLingua English Dictionary [home, info]
15. threaten: Cambridge Dictionary of American English [home, info]
16. Threaten: Online Plain Text English Dictionary [home, info]
17. threaten: Webster's Revised Unabridged, 1913 Edition [home, info]
18. threaten: Rhymezone [home, info]
19. threaten: AllWords.com Multi-Lingual Dictionary [home, info]
20. threaten: Webster's 1828 Dictionary [home, info]
21. threaten: Free Dictionary [home, info]
22. threaten: Mnemonic Dictionary [home, info]
23. threaten: WordNet 1.7 Vocabulary Helper [home, info]
24. threaten: LookWAYup Translating Dictionary/Thesaurus [home, info]
25. threaten: Dictionary/thesaurus [home, info]
26. threaten: Wikimedia Commons US English Pronunciations [home, info]

Business (1 matching dictionary)

27. threaten: Legal dictionary [home, info]

Miscellaneous (2 matching dictionaries)

28. Threaten: Brilliant Dream Dictionary [home, info]
29. threaten: Idioms [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (threaten) ▸ verb:  to utter intentions of injury or punishment against:"He threatened me when I tried to call the police" ▸ verb:  to be a menacing indication of something:"The clouds threaten rain" ("Danger threatens") ▸ verb:  pose a threat to; present a danger to ▸ Words similar to threaten ▸ Usage examples for threaten ▸ Words that often appear near threaten ▸ Rhymes of threaten ▸ Invented words related to threaten