裏技

1. Origins, structure, and basic meaning

• Structure: 裏技, read うらわざ, means a special, little-known technique.
• Basic usage: It can describe ways to save cooking time or operations not listed in a manual.

2. Common pitfalls and similar expressions

• Not necessarily cheating
  • It does not necessarily imply wrongdoing as 不正 does. It can name a useful hidden technique.
• Compared with an ordinary tip
  • コツ is a general knack or tip for doing something well; 裏技 emphasizes a less widely known method.