沸き立つ

1. Origins, structure, and basic meaning

• Structure: 沸き立つ(わきたつ) means to boil vigorously or erupt in excitement.
• Basic usage: It describes water in a pot or spectators excited by a victory.

2. Common pitfalls and similar expressions

• What boils or erupts
  • 湯が沸き立つ describes water; 観客席が沸き立つ figuratively describes the spectators' excitement.
• The past form
  • The 立つ part changes to produce 沸き立った.