Synonyms of sudden

sudden

adjective

ˈsə-dᵊn 

as in unexpected

not expected

the sudden snowstorm resulted in thousands of evening commuters abandoning their cars on impassable highways

Synonyms & Similar Words

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

Antonyms & Near Antonyms

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

Synonym Chooser

How does the adjective sudden contrast with its synonyms?

Some common synonyms of sudden are abrupt, headlong, impetuous, and precipitate. While all these words mean "showing undue haste or unexpectedness," sudden stresses unexpectedness and sharpness or violence of action.

flew into a sudden rage

When might abrupt be a better fit than sudden?

Although the words abrupt and sudden have much in common, abrupt stresses curtness and a lack of warning or ceremony.

an abrupt refusal

When is it sensible to use headlong instead of sudden?

While in some cases nearly identical to sudden, headlong stresses rashness and lack of forethought.

a headlong flight from arrest

When is impetuous a more appropriate choice than sudden?

The meanings of impetuous and sudden largely overlap; however, impetuous stresses extreme impatience or impulsiveness.

an impetuous lover proposing marriage

Where would precipitate be a reasonable alternative to sudden?

While the synonyms precipitate and sudden are close in meaning, precipitate stresses lack of due deliberation and implies prematureness of action.

the army's precipitate withdrawal

Example Sentences

Recent Examples of sudden

The band’s message may have got slightly lost, however, amid their acid-trip screen visuals, military drag, and the climactic near-naked reveals, not to mention the sudden appearance of a rocket-straddling Vladimir Lenin impersonator who looked more like the Smurfs’ arch-nemesis Gargamel. —Nick Allen, Vulture, 13 May 2025

And all of a sudden, the series is tied with three games left. —Jordan McPherson, Miami Herald, 12 May 2025

In November 2006, Margaret — a lifelong asthmatic — died following a sudden and severe asthma attack. —Lynsey Eidell, People.com, 10 May 2025

On April 28th, a sudden frequency drop in Spain’s power grid triggered cascading shutdowns, leaving millions without power. —Mark Le Dain, Forbes.com, 1 May 2025

Phrases Containing sudden

• all of a sudden

Video

'All over sudden' vs. 'All of a sudden'

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