Usually means: Uncertain, skeptical about truth, validity.
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We found 28 dictionaries that define the word doubtful:

General (24 matching dictionaries)
  1. doubtful: Merriam-Webster.com
  2. doubtful: Oxford Learner's Dictionaries
  3. doubtful: American Heritage Dictionary of the English Language
  4. doubtful: Collins English Dictionary
  5. doubtful: Vocabulary.com
  6. Doubtful, doubtful: Wordnik
  7. doubtful: Cambridge Advanced Learner's Dictionary
  8. doubtful: Wiktionary
  9. doubtful: Webster's New World College Dictionary, 4th Ed.
  10. doubtful: The Wordsmyth English Dictionary-Thesaurus
  11. doubtful: Infoplease Dictionary
  12. Doubtful, doubtful: Dictionary.com
  13. doubtful: Cambridge Essential American English Dictionary
  14. Doubtful (film), Doubtful: Wikipedia, the Free Encyclopedia
  15. Doubtful: Online Plain Text English Dictionary
  16. doubtful: Webster's Revised Unabridged, 1913 Edition
  17. doubtful: Rhymezone
  18. doubtful: AllWords.com Multi-Lingual Dictionary
  19. doubtful: Webster's 1828 Dictionary
  20. doubtful: Free Dictionary
  21. doubtful: Mnemonic Dictionary
  22. doubtful: Dictionary/thesaurus

Business (1 matching dictionary)
  1. doubtful: Legal dictionary

Medicine (1 matching dictionary)
  1. online medical dictionary (No longer online)

Miscellaneous (1 matching dictionary)
  1. DOUBTFUL: Acronym Finder

Slang (1 matching dictionary)
  1. doubtful: Urban Dictionary

(Note: See doubtfully as well.)

Definitions from Wiktionary (
)
American English Definition British English Definition
adjective:  Subject to, or causing doubt.
adjective:  Experiencing or showing doubt, skeptical.
adjective:  Undecided or of uncertain outcome.
adjective:  (obsolete) Fearsome, dreadful.
adjective:  Improbable or unlikely.
adjective:  Suspicious, or of dubious character.
adjective:  Unclear or unreliable.
noun:  A doubtful person or thing.

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Similar:

Opposite:

Types:

Phrases:

Adjectives:

Colors:
    slate gray,     charcoal,     ash gray,     misty blue,     storm cloud, more...



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