Sudden
Sudden adjective - Not expected.
Usage example: the sudden snowstorm resulted in thousands of evening commuters abandoning their cars on impassable highways
Unforeseen is a synonym for sudden in unexpected topic. In some cases you can use "Unforeseen" instead an adjective "Sudden". popular alternative
Nearby Words: suddenly, suddenness
Unforeseen
Unforeseen adjective - Not expected.
Usage example: there are almost always unforeseen consequences for any major endeavor
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Synonyms for Unforeseen
Sudden is a synonym for unforeseen in unexpected topic. You can use "Sudden" instead the word "Unforeseen" as an adjective or a noun, if it concerns topics such as surprising. popular alternative
Nearby Word: unforeseeable
Mutual synonyms
Related pairs
- abrupt and sudden
- abrupt and unforeseen
- impetuous and sudden
- impetuous and unforeseen
- precipitous and sudden
- precipitous and unforeseen
- precipitate and sudden
- precipitate and unforeseen
- quick and sudden
- quick and unforeseen
- hasty and sudden
- hasty and unforeseen
- astonishing and sudden
- astonishing and unforeseen
Both words in one sentence
- Sometimes even when we do have all the information, the twist can come as a shock due to a sudden, unforeseen action by other actors in the plot, the setting or place it's occurring in.
Source: Plot Twist - A Meaningless Villain Victory is when the villain wins but a sudden unforeseen event renders their victory hollow and their efforts for naught.
Source: Pyrrhic Villainy
Cite this Source
Unforeseen and Sudden. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/sudden/unforeseen
Sudden & Unforeseen. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/sudden/unforeseen>.
Unforeseen or Sudden. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/sudden/unforeseen.
Google Ngram Viewer shows how "sudden" and "unforeseen" have occurred on timeline