Synonyms of the word

undeterminable

• adj. not possible to determine.

incalculable

• adj. (not comparable) Very great or numerous.
• adj. (not comparable, mathematics) Impossible to calculate.
• adj. (comparable) Of a person's mood or character, etc.: Impossible to predict.

indeterminable

• adj. That is incapable of being measured.
• adj. That is incapable of being ascertained.
• n. An indeterminable thing or quantity.

indeterminate

• adj. Not accurately determined or determinable.
• adj. Imprecise or vague.
• adj. (biology, of growth) with no genetically defined end, and thus theoretically limitless.
• adj. (botany, of inflorescences) not topped with some form of terminal bud.
• adj. intersex.

unascertainable

• adj. That cannot be ascertained; uncertain, unable to be determined or discovered.

undetermined

• adj. Not determined; not settled; not decided.
• adj. Not limited; not defined; indeterminate.

undiscoverable

• adj. Unable to be discovered; hidden perfectly.
• adj. (law) Not subject to being produced in response to a discovery request.

unpredictable

• adj. Unable to be predicted.
• n. An unpredictable thing.