all of a sudden


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sud·den

 (sŭd′n)
adj.
1. Happening without warning; unforeseen: a sudden storm.
2. Happening or done without delay; hasty or immediate: a sudden decision.
3. Characterized by sharp change in elevation; precipitous: a sudden drop in the ocean floor.
Idiom:
all of a sudden
Very quickly and unexpectedly; suddenly.

[Middle English sodain, from Old French, from Vulgar Latin *subitānus, from Latin subitāneus, from subitus, from past participle of subīre, to approach stealthily : sub-, secretly; see sub- + īre, to go; see ei- in Indo-European roots.]

sud′den·ly adv.
sud′den·ness n.

all of a sudden

- Is the grammatically correct version; do not say "all of the sudden."
See also related terms for sudden.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adv.1.all of a sudden - without warningall of a sudden - without warning; "all at once, he started shouting"
2.all of a sudden - happening unexpectedlyall of a sudden - happening unexpectedly; "suddenly she felt a sharp pain in her side"
Translations
فَجأةً
najednou
pludselig
hirtelenváratlanul
allt í einu
zrazu
plötsligt
anîdenansızın

sudden

(ˈsadn) adjective
happening etc quickly and unexpectedly. a sudden attack; His decision to get married is rather sudden!; a sudden bend in the road.
ˈsuddenness noun
ˈsuddenly adverb
He suddenly woke up; Suddenly she realized that the stranger had a gun.
all of a sudden
suddenly or unexpectedly. All of a sudden the lights went out.
References in classic literature ?
All of a sudden she was arrested in the middle of a fine paragraph by Mac, who sat bolt upright, brought both feet down with a thump, and said, in a rough, excited tone
A SHEPHERD, watching his Ass feeding in a meadow, was alarmed all of a sudden by the cries of the enemy.
Then all of a sudden he fell into a deep sleep, and forgetful of his dangerous position, he slumbered sweetly.