堕落

1. Origins, structure, and basic meaning

• Structure: 堕落 is read as だらく and is a noun and する verb for moral corruption or decline in conduct, ideals, or way of life.
• Basic usage: A gradual change appears in 次第に堕落する, while self-awareness appears in 自分の堕落を自覚する.

2. Common pitfalls and similar expressions

• Moral or behavioral decline
  • It strongly evaluates a worsening of values or conduct, rather than a simple loss of ability.
• Difference from 劣化
  • 劣化 suits deterioration in a material, photograph, or condition; 堕落 focuses on corruption in a person’s morals, behavior, or life.