unforeseen

Từ điển Oxford Advanced Learner 8th

un·fore·seen [unforeseen] BrE [ˌʌnfɔːˈsiːn] NAmE [ˌʌnfɔːrˈsiːn] adjective
that you did not expect to happen
Syn: ↑unexpected
•unforeseen delays/problems
•The project was running late owing to unforeseen circumstances.
compare ↑foresee

Example Bank:
•The pilot study should highlight any unforeseen problems.
•There were unforeseen obstacles to overcome.
•We reserve the right to alter the timetable in the event of unforeseen circumstances.

• Từ đồng nghĩa / Synonyms:
  unanticipated, unlooked-for, out of the blue(p)