noun
one after another; in succession
Describes things appearing or occurring in a chain, like pulling up sweet potatoes one after another. Often used adverbially as 芋づる式に.
芋づる式に犯人が捕まった。
The suspects were caught one after another.
その事件から芋づる式に不正
The incident led to a chain of revelations of wrongdoing.
次々 is a general adverb for 'one after another', while 芋づる式 emphasizes a connected chain or domino effect.
From 芋 (potato) + づる (vine) + 式 (style), referring to the way sweet potatoes are connected by vines and can be pulled up in succession.