unforeseen

adjective

un·​fore·​seen ˌən-fȯr-ˈsēn 

: not anticipated or expected : not foreseen : unexpected

an unforeseen delay

unforeseen consequences

Synonyms

• abrupt
• sudden
• unanticipated
• unexpected
• unlooked-for

Examples of unforeseen in a Sentence

there are almost always unforeseen consequences for any major endeavor

unforeseen problems delayed the project beyond its deadline

Recent Examples on the Web

And then there are the years that the Oscars abbreviate the season with unforeseen consequences. —Clayton Davis, Variety, 17 Mar. 2025

Upon landing, the astronauts were transported to a medical facility for standard evaluations, underscoring the mission's success and SpaceX's pivotal role in ensuring the safe return of astronauts amidst unforeseen complications. —Raja Krishnamoorthi, Newsweek, 13 Mar. 2025

Economic downturns, shifting market conditions and other unforeseen disruptions can quickly put financial strain on an organization. —Expert Panel®, Forbes, 12 Mar. 2025

Avoid Cruise Control Driving at high speed in inclement weather is obviously not a great call, but believe it or not, cruise control can also cause unforeseen headaches on highways and interstates. —Kade Krichko, Outside Online, 6 Mar. 2025

Word History

First Known Use

1651, in the meaning defined above

Rhymes for unforeseen

• acetylene
• adenosine
• amphetamine
• anthropocene
• antipyrine
• apomorphine
• apoprotein
• aquamarine
• arsphenamine
• azobenzene
• buprenorphine
• chlorobenzene