Found 2 items, similar to of a sudden.
English → English (WordNet) Definition: of a sudden of a sudden adv : happening unexpectedly; “suddenly she felt a sharp pain in her side” [syn: suddenly, all of a sudden]
English → English (gcide) Definition: Of a sudden Sudden \Sud"den\, n. An unexpected occurrence; a surprise. [1913 Webster] All of a sudden, On a sudden, Of a sudden, sooner than was expected; without the usual preparation; suddenly. [1913 Webster] How art thou lost! how on a sudden lost! --Milton. [1913 Webster] He withdrew his opposition all of a sudden. --Thackeray. [1913 Webster]