値する

1. Origins, structure, and basic meaning

• Structure: 値する, read あたいする, means being worthy of a judgment or action.
• Basic usage: It is used when courageous behavior deserves praise or a discovery merits detailed investigation.
  • 彼の勇気ある行動は称賛に値する。

2. Common pitfalls and similar expressions

• A judgment expressed by a noun
  • 称賛に値する uses に値する after a noun and means deserving praise.
• An action expressed by a verb
  • 調べるに値する uses に値する after a dictionary-form verb and means being worth investigating.