sincere

1. Origins, structure, and basic meaning

• Structure: 篤 has 16 strokes and can express deep generosity or a gravely serious illness.
• Basic usage: 危篤 is read きとく, and 篤志 is read とくし.

2. Common pitfalls and similar expressions

• Meaning depends on the word
  • 祖父が危篤だ means my grandfather is in critical condition.
  • 危篤 describes an illness serious enough to threaten life.
  • 篤志 is generosity directed toward helping others.
  • 多くの人の篤志によって means through the generosity of many people.