続出

1. Origins, structure, and basic meaning

• Structure: 続出 is read as ぞくしゅつ and means “appearance in succession” and “spate”.
• Basic usage: It describes participants becoming confused one after another and stores selling out in rapid succession.

2. Common pitfalls and similar expressions

• Key distinction: 参加者が続出する
  • It means appearing one after another; the people or states multiplying are the subject, as in 参加者が続出する.