Synonyms of the word

incertitude

• n. uncertainty, doubt, insecurity.

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.

doubtfulness

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

dubiety

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

dubiousness

• n. The state of being dubious.

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.