Meaning ofdoubtfulin English

Adjective

1. experiencing uncertainty; skeptical
   The detective was doubtful about the witness's testimony.
2. causing uncertainty; skepticism
   The new policy has left many people doubtful about their future.
3. undecided; uncertain outcome
   The outcome of the game is doubtful as both teams are equally strong.
4. improbable; unlikely result
   The scientist was doubtful that the experiment would produce the desired result.
5. of uncertain trust; questionable character
   The company's financial records seem doubtful and require further investigation.
6. unclear or unreliable; lacking confidence
   The patient was doubtful about the effectiveness of the new treatment.