Synonyms of the word

doubtfulness

• n. The state or quality of being doubtful; doubt; uncertainty.

doubt

• n. Uncertainty, disbelief.
• v. (transitive, intransitive) To lack confidence in; to disbelieve, question, or suspect.
• v. (archaic) To fear; to suspect.
• v. (obsolete) To fear; to be apprehensive of.
• v. (obsolete) To fill with fear; to affright.

dubiety

• n. (uncountable) Doubtfulness.
• n. (countable) A particular instance of doubt or uncertainty.

dubiousness

• n. The state of being dubious.

incertitude

• n. uncertainty, doubt, insecurity.

precariousness

• n. A state of being uncertain or unstable.

question

• n. A sentence, phrase or word which asks for information, reply or response; an interrogative.
• n. A subject or topic for consideration or investigation.
• n. A doubt or challenge about the truth or accuracy of a matter.
• n. A proposal to a meeting as a topic for deliberation.
• n. interrogation by torture.
• n. (obsolete) Talk; conversation; speech.
• v. To ask questions of; interrogate; enquire; ask for information.
• v. To raise doubts about; have doubts about.
• v. (obsolete) To argue; to converse; to dispute.

uncertainness

• n. The quality of being uncertain.

uncertainty

• n. (uncountable) Doubt; the condition of being uncertain or without conviction.
• n. (countable) Something uncertain or ambiguous.
• n. (uncountable, mathematics) A parameter that measures the dispersion of a range of measured values.