unpredetermined

Left to chance

Not decided or established in advance.

Unpredetermined emphasizes that an outcome, choice, or condition remains open rather than fixed beforehand: The schedule is unpredetermined—we'll figure it out as we go.

The word appears in philosophical and scientific contexts discussing free will or causation, contrasting with views that events are predetermined by prior causes.

random

random

Occurring without pattern

aleatory · haphazard · unplanned · spontaneous · unpatterned · unstructured · unsystematic · orderless · patternless · nonsequential

uncertain

uncertain

Not firmly known

indefinite · ambiguous · doubtful · questionable · tentative · vague · nebulous · unclear · unconfirmed · pending

flexible

flexible

Able to bend freely

changeable · modifiable · adjustable · fluid · mutable · alterable · revisable · unfixed · unset · unscheduled

Opposites
prior determination/fate

unpredeterminedpredetermined

Established beforehand

predestined · foreordained · fated · preordained · preset

certainty/definiteness

unpredeterminedcertain

Free from doubt

definite · determined · concrete · fixed · assured

Family

predetermined, predetermine, predetermines, predetermining, predetermination, determine, determines, determined, determining

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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G