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We found 32 dictionaries with English definitions that include the word frustrate:
Click on the first link on a line below to go directly to a page where "frustrate" is defined.

General (28 matching dictionaries)

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

Art (1 matching dictionary)

27. FRUSTRATE: Shakespeare Glossary [home, info]

Business (2 matching dictionaries)

28. frustrate: Glossary of Legal Terms [home, info]
29. frustrate: Legal dictionary [home, info]

Computing (1 matching dictionary)

30. frustrate: Encyclopedia [home, info]

(Note: See frustrating for more definitions.)

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (frustrate) ▸ verb:  treat cruelly ▸ verb:  hinder or prevent (the efforts, plans, or desires) of ("What ultimately frustrated every challenger was Ruth's amazing September surge") ▸ Also see frustrating ▸ Word origin ▸ Words similar to frustrate ▸ Usage examples for frustrate ▸ Words that often appear near frustrate ▸ Rhymes of frustrate ▸ Invented words related to frustrate