繰り広げる

1. Origins, structure, and basic meaning

• Structure: 繰り広げる, read くりひろげる, means to carry on or unfold an activity or scene.
• Basic usage: Use it for an unfolding activity such as a lively debate or an intense match.

2. Common pitfalls and similar expressions

• An unfolding activity
  • The example's 議論を繰り広げた says that the two researchers carried on a debate.
  • 熱戦を繰り広げていた says that the children were engaged in an intense match at that past time.