湧く

1. Origins, structure, and basic meaning

• Structure: Spelling: 湧く. Reading: わく. Core meaning: to spring forth; to arise.
• Basic usage: Representative examples: 岩の間から冷たい水が湧いている / 良い知らせを聞いて、急に勇気が湧いた.

2. Common pitfalls and similar expressions

• Water springing and emotion arising
  • It can describe water physically springing from rocks or courage or an idea arising figuratively in the mind. In both senses, it is intransitive and the subject emerges rather than being directly caused.