瞬く

1. Origins, structure, and basic meaning

• Structure: 瞬く, read またたく, describes light twinkling or flickering.
• Basic usage: It describes stars twinkling or a light flickering briefly.
  • 夜空で無数の星が瞬く。

2. Common pitfalls and similar expressions

• Reading the past form
  • The past of 瞬く(またたく) is 瞬いた(またたいた): the final く changes to いた.