that you did not expect to happen synonym unexpected未想到的;始料不及的 unforeseen delays/problems 意外的延误/问题 The project was running late owing to unforeseen circumstances. 这个项目因意外情况而拖延了。
Extra ExamplesThe pilot study should highlight any unforeseen problems. 试点研究应强调任何不可预见的问题。 There were unforeseen obstacles to overcome. 有不可预见的障碍需要克服。
Oxford Collocations DictionaryUnforeseen is used with these nouns:- change
- circumstance
- consequence
- …