all of a sudden

== English == === Alternative forms === all of the sudden all the sudden all on a sudden (Scotland) of a sudden on a sudden (obsolete) upon a sudden (obsolete) === Pronunciation === (US) IPA(key): /ˌɔl əv ə ˈsʌdən/ Hyphenation: all‧of‧a‧sud‧den === Adverb === all of a sudden (not comparable) (set phrase, colloquial) Suddenly, quickly, without warning. Synonyms: all at once, at one stroke, in one fell swoop, just like that, out of the blue ==== Translations ==== === See also === just like that