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of a sudden

of a sudden

116 7.1
Happens quickly and without warning
  • idiom
  • Informal
translation icon : de repente
  • "Jesus Christ," said Brian Kearney, watching the crowd all of a sudden surge toward the bridge again.

And of a sudden this one girl throws a drink and she gets the mic blown.

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Examples

  • It began to go up, and then all of a sudden we lost it.

  • Why do you wanna help them all of a sudden?

  • Things just all of a sudden become clear.

  • Like all of a sudden things are not OK.

  • Whenever we have a meeting set up, all of a sudden parents are busy.

    Academic text (2008)
  • A 44-year-old man presented with a complaint of a sudden loss of vision in his right eye.

    Academic text (2006)
  • Her shoe seemed enormous all of a sudden, a clown boot.

    Fiction book (1990)
  • I'm about halfway down, and all of a sudden I hear Nate's voice.

  • It just feels like you're on fire all of a sudden!

  • She was fine one minute, but then all of a sudden, she started crying.

Synonyms

suddenly
vsof a sudden
1.0

Quickly and without warning

stresses the same unpredictability but can imply broader simultaneous effect
immediately
vsof a sudden
1.0

At once without waiting

adds the sense of being unexpected rather than merely without delay
all of a sudden
vsof a sudden
  • Informal
987 2.7

Very quickly and without warning

is the neutral label for sudden events without extra emphasis
at once
vsof a sudden
344 1.0

Immediately without delay

emphasises unexpectedness and suddenness rather than prompt timing alone
just like that
vsof a sudden
  • Informal
183 4.2

Happens suddenly without warning or effort

is the straightforward idea of suddenness without casual tone
out of nowhere
vsof a sudden
170 4.2

Happening suddenly without any warning

expresses suddenness but not the sense of invisible origin
abruptly
vsof a sudden
145 3.3

In a sudden way that gives no warning

is similar but can feel less formal and less severe
out of the blue
vsof a sudden
  • Informal
95 3.4

Something happens suddenly and without warning

is the same sudden idea but without the idiomatic surprise tone
in the blink of an eye
vsof a sudden
  • Informal
50 3.3

Very quickly, in almost no time

covers sudden events generally without the instant visual image
in a flash
vsof a sudden
  • Informal
35 2.5

Very quickly in a single moment

is similar but emphasises happening all at once rather than speed only
from nowhere
vsof a sudden
28 4.1

Suddenly and without any warning

is the general sudden occurrence, not focusing on mysterious origin
out of thin air
vsof a sudden
25 5.8

Suddenly with no clear reason, like magic

means sudden and unexpected but without the magical image
one fell swoop
vsof a sudden
14 7.6

A single sudden action that happens all at once

is about sudden change generally, not only a single act
all at once
vsof a sudden
13 3.0

Happening suddenly and without warning

focuses on suddenness without stressing simultaneous parts specifically
in a snap
vsof a sudden
  • Informal
3 3.0

It happens very quickly with little effort

focuses on unexpected, complete occurrence rather than ease or effort
in the wink of an eye
vsof a sudden
  • Informal
1 3.5

Very quickly, in an instant

is broader and can describe suddenness without that tiny time image
presto
vsof a sudden
  • Informal
7.8

Said when something happens suddenly, as if by magic

is plain suddenness without theatrical or playful flair

Antonyms

273 1.9

Slowly and steadily over time

How Sudden

instantly
330 1.0
of a sudden
  • Informal
116 7.1
gradually
273 1.9

Surface Forms

of a sudden positive

Morphology

of + a + sudden

The meaning 'all at once; suddenly' is directly signalled by the word 'sudden' and the prepositional pattern 'of a X' simply turns that concept into an adverbial phrase; a learner who knows 'sudden' will readily infer the meaning. Although the structure is somewhat fixed (as in 'all of a sudden'), the semantic contribution of the parts is transparent and parallels constructions in many languages, so a B1 learner would likely understand it.

Etymology

Of a sudden makes you imagine one quick moment when something sudden appears out of nowhere, like a calm room and then a loud noise. That's why it means 'all at once' or 'without warning'.