lament

1. Origins, structure, and basic meaning

• Structure: 慨 has 13 strokes and the on-reading がい, used in 感慨 (かんがい) and 慨嘆 (がいたん).
• Basic usage: 感慨 means deep emotion felt when reflecting on an experience; 慨嘆 means lamenting an unfavorable change or situation.

2. Common pitfalls and similar expressions

• Deep emotion and lamentation
  • 深い感慨がこみ上げた describes deep emotion welling up at the sight of the school building on graduation day. 言葉にできない感慨 means feelings beyond words on returning home after ten years.
  • 町の荒廃を慨嘆した means lamented the town's devastation. 時代の変化への慨嘆 refers to a lament over changing times recorded in an old letter.