Definition

1. Noun:
   • The state of being uncertain or unsure about something: Doubtfulness refers to a feeling of uncertainty or lack of conviction regarding the truth, existence, or reliability of something.
   • The quality of being questionable or dubious: It can also describe the inherent quality of something that is open to doubt, suspicion, or is not clearly established.

Usage and Examples

• Expressing personal uncertainty:
  • Her doubtfulness about the plan's success made her hesitate to commit.
  • He listened with obvious doubtfulness to the stranger's improbable story.
• Describing the questionable nature of something:
  • The doubtfulness of the evidence led the jury to acquit the defendant.
  • There is considerable doubtfulness surrounding the historical accuracy of that account.

Advanced Usage

• "To be filled with doubtfulness": To be in a state of profound uncertainty.
  • After reading the conflicting reports, she was filled with doubtfulness about what really happened.
• "To cast doubtfulness on": To cause something to be viewed as uncertain or questionable.
  • The new findings cast doubtfulness on the previously accepted theory.

Variants and Related Words

• Doubtful (adj): Feeling uncertain; open to question.
  • I am doubtful about the weather holding for the picnic.
• Doubt (n/v): A feeling of uncertainty; to be uncertain about.
  • She had no doubt that he was telling the truth.
• Dubiousness (n): The state of being doubtful; a close synonym.
  • The dubiousness of the deal made investors wary.

Synonyms

• Uncertainty: The state of being unsure.
• Skepticism: An attitude of doubt or a disposition to incredulity.
• Misgiving: A feeling of doubt or apprehension.

Antonyms

• Certainty: Firm conviction that something is the case.
• Confidence: The feeling or belief that one can rely on someone or something.
• Assurance: A positive declaration intended to give confidence.

Related Phrases and Idioms

• A shadow of doubtfulness: A slight or lingering feeling of uncertainty.
  • Despite the confirmation, a shadow of doubtfulness remained in her mind.
• Beyond doubtfulness: Completely certain; without any question.
  • His integrity is beyond doubtfulness.

Noun

1. uncertainty about the truth or factuality or existence of something
   • the dubiousness of his claim
   • there is no question about the validity of the enterprise
2. the state of being unsure of something