不可能

1. Origins, structure, and basic meaning

• Structure: Spelling: 不可能. Reading: ふかのう. Core meaning: impossible.
• Basic usage: Representative examples: この作業を今日中に一人で終えるのは不可能だ / 雪が深いため、今夜の登頂は不可能だと判断された.

2. Common pitfalls and similar expressions

• A strong impossibility judgment
  • 不可能だ judges something impossible under the stated conditions. It is stronger than 難しい, which can merely mean difficult or unlikely, so it should not be used as casual exaggeration.