unpredicted

/ˌʌnprɪˈdɪktɪd/
adjective
  1. Not foreseen or expected; happening without warning.
    • The scientist was excited by the unpredicted result of the experiment.
    • The unpredicted snowstorm caused many schools to close early.
    • Her unpredicted resignation left the company scrambling to find a replacement.
Antonyms
What does "unpredicted" mean? | whatsthatwordmean | whatsthatwordmean