sudden

1 of 2

adjective

sud·​den ˈsə-dᵊn 

1

a

: happening or coming unexpectedly

a sudden shower

b

: changing angle or character all at once

a sudden drop in the ocean bottom

2

: marked by or manifesting abruptness or haste

a sudden departure

3

: made or brought about in a short time : prompt

suddenly adverb

suddenness

ˈsə-dᵊn-(n)əs 

noun

sudden

2 of 2

noun

obsolete

: an unexpected occurrence : emergency

Phrases

all of a sudden or less commonly on a sudden

: very quickly in usually an unexpected way : in a sudden manner

Synonyms

Adjective

• abrupt
• unanticipated
• unexpected
• unforeseen
• unlooked-for

Choose the Right Synonym for sudden

precipitate, headlong, abrupt, impetuous, sudden mean showing undue haste or unexpectedness.

precipitate stresses lack of due deliberation and implies prematureness of action.

the army's precipitate withdrawal

headlong stresses rashness and lack of forethought.

a headlong flight from arrest

abrupt stresses curtness and a lack of warning or ceremony.

an abrupt refusal

impetuous stresses extreme impatience or impulsiveness.

an impetuous lover proposing marriage

sudden stresses unexpectedness and sharpness or violence of action.

flew into a sudden rage

Examples of sudden in a Sentence

Adjective

a sudden change in temperature

Sudden fame can be difficult to deal with.

She had a sudden urge to be outside.

His death was very sudden.

a sudden turn in the road

I was surprised by her sudden decision to quit.

The director's sudden departure leaves the organization's future uncertain.

Recent Examples on the Web

Adjective

These sudden eruptions of random violence seem inspired by GSC’s own experiences having to stop work to flee to bomb shelters and finding previously peaceful streets marred by the war. —Issy Van Der Velde, Rolling Stone, 20 Nov. 2024

That part of the tale is set in motion with a sudden squall – chillingly rendered by thunder cracks (kudos to John Shivers’ sound design) and flashes of lightning (ditto to lighting designer Kevin Adams). —Greg Evans, Deadline, 19 Nov. 2024

Beyoncé will perform at halftime of the second contest, drawing in dedicated fans and potentially causing a sudden spike in viewers, which can present technical challenges. —Jacob Feldman, Sportico.com, 18 Nov. 2024

The lack of regulation may help explain why the state has the nation’s lowest autopsy rate in child deaths attributed to unnatural or unknown causes — a category that includes suicides, homicides, crashes, drownings, overdoses and sudden infant deaths. —Audrey Dutton, ProPublica, 11 Nov. 2024

Word History

Etymology

Adjective

Middle English sodain, from Anglo-French sudain, from Latin subitaneus, from subitus sudden, from past participle of subire to come up, from sub- up + ire to go — more at sub-, issue entry 1

First Known Use

Adjective

14th century, in the meaning defined at sense 1a

Noun

1558, in the meaning defined above

Phrases Containing sudden

• all of a sudden
• on a sudden
• sudden death
• sudden infant death syndrome
• sudden victory

Video

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

Figuring it out at once

Kids Definition

sudden

adjective

sud·​den

ˈsəd-ᵊn

1

a

: happening or coming unexpectedly

a sudden shower

b

: changing angle or character all at once

a sudden turn in the road

2

: marked by or showing haste

a sudden decision

3

: made or brought about in a short time

a sudden cure

suddenly adverb

suddenness

ˈsəd-ᵊn-(n)əs

noun