right · this

1. Origins, structure, and basic meaning

• Structure: 是 has 9 strokes; 是非 is read ぜひ, and 是正 is read ぜせい.
• Basic usage: 是非 expresses an emphatic invitation or a judgment of right and wrong; 是正 denotes correcting something wrong.

2. Common pitfalls and similar expressions

• Invitation, judgment, and correction
  • 是非この店に寄ってください is an emphatic invitation to stop by the store. In 計画の是非, the word functions as a noun referring to whether the plan is right or wrong.
  • 欠陥を直ちに是正した means immediately correcting a defect. Discussing appropriateness with 是非 differs from the actual corrective action expressed by 是正.