Synonyms of unexpected

unexpected

adjective

ˌən-ik-ˈspek-təd 

as in sudden

not expected

the failure of the backup generator was unexpected and a contingency for which we weren't prepared

Synonyms & Similar Words

• sudden
• unanticipated
• unforeseen
• abrupt
• unlooked-for
• unlikely
• unplanned
• improbable
• surprising
• startling
• unintended

Antonyms & Near Antonyms

• anticipated
• expected
• foreseen
• predicted
• unsurprising
• prophesied

Example Sentences

Recent Examples of unexpected

From Rocket Lab’s perspective, Victus Haze came with an unexpected twist. — Stephen Clark, ArsTechnica, 30 July 2026

As more young adults are diagnosed with cancers that once largely affected older adults, young people like Crofton are facing unexpected questions in their twenties about preserving their fertility ahead of treatment. — Rachel Hale, USA Today, 29 July 2026

Diana’s notoriously rocky relationship with Charles ended in divorce in 1996, one year before Diana’s unexpected death following a Paris car crash. — Bailey Bujnosek, InStyle, 29 July 2026

Five college graduates looking for a fun adventure find an unexpected predator in Thailand’s coastal caves. — Culture Critic, Los Angeles Times, 29 July 2026