難しい

1. Origins, structure, and basic meaning

• Structure: 難しい (むずかしい) is an adjective for difficulty in understanding or performing. The examples show present judgment and past experience.
• Basic usage: A problem is somewhat difficult for the speaker; tying thin thread in darkness was difficult.

2. Common pitfalls and similar expressions

• Problem difficult for a person and task difficult under conditions
  • The first standard is 私には; the second comes from darkness and thin thread. Difficulty depends on task and experiencer.