至難

1. Origins, structure, and basic meaning

• Structure: 至難 is read as しなん and is a formal expression for something extremely difficult or close to impossible.
• Basic usage: An exceptionally difficult task appears in 至難の業だ, while the difficulty of an action appears in 登ることは至難である.

2. Common pitfalls and similar expressions

• Very strong degree of difficulty
  • It is stronger than merely “not easy” and judges the likelihood of success as very low.
• Difference from 困難
  • 困難 broadly means difficult to carry out or resolve, while 至難 emphasizes such extreme difficulty that the task is close to impossible.