all of a sudden


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all of a sudden

Unexpectedly and abruptly; suddenly. I was startled when the fire alarm went off all of a sudden. I thought Laura and I were friends, but all of a sudden, she stopped talking to me.
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all of a sudden

suddenly. All of a sudden lightning struck the tree we were sitting under. I felt a sharp pain in my side all of a sudden.
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all of a sudden

Entirely without warning, abruptly, as in All of a sudden the lights went out. In Shakespeare's day the common phrase was of a sudden, the word all being added in the late 1600s. Also see all at once, def. 2.
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all of a sudden

COMMON If something happens all of a sudden, it happens quickly and unexpectedly. All of a sudden she didn't look sleepy any more. I felt incredibly lonely all of a sudden.
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(all) of a sudden

suddenly.
As a noun sudden is now found only in this phrase, but from the mid 16th century to the early 18th century it was in regular use in the sense ‘an unexpected danger or emergency’.
See also: of, sudden

ˌall of a ˈsudden

suddenly and unexpectedly: I was sitting reading my book when all of a sudden the lights went out.
See also: all, of, sudden

all of a sudden

Very quickly and unexpectedly; suddenly.
See also: all, of, sudden