妙案

1. Origins, structure, and basic meaning

• Structure: The evaluative noun 妙案 (みょうあん) is a clever idea or ingenious solution to a difficult problem.
• Basic usage: Someone may 妙案を思いつく, or a group may ask 妙案はないだろうか while searching for one.

2. Common pitfalls and similar expressions

• An ingenious solution
  • It praises both ingenuity and practical usefulness, not mere unusualness.