美味しい

1. Origins, structure, and basic meaning

• Structure: 美味しい(おいしい) is an i-adjective meaning that food or drink tastes good.
• Basic usage: It is used to praise a soup or describe visiting a shop after hearing that its food is good.

2. Common pitfalls and similar expressions

• Negative and past forms
  • The negative form is 美味しくない, and the past form is 美味しかった. The final い changes to くない or かった respectively.