This is the 4069th most frequent Korean word.
잇달아
"잇달아" means "one after another" or "in succession."
Here, '잇달아' indicates that the speeches occurred one after another without interruption.
행사장에서 잇달아 연설이 열렸습니다.
Speeches consecutively took place at the event.
In this context, '잇달아' describes the successive action of people emerging.
비가 그치자 사람들이 잇달아 밖으로 나왔습니다.
Once the rain stopped, people successively came outside.
Here, '잇달아' conveys the idea of problems occurring sequentially.