This is the most direct usage, often used with 是…的 (shì…de) to state that something is incorrect.
//e.g., 这个答案是**错**的。 (Zhège dá'àn shì **cuò** de.) - This answer is wrong.// * **As a Noun (A mistake/fault):** It can refer to the mistake itself. //e.g., 这不是你的**错**。 (Zhè búshì nǐ de **cuò**.) - This isn't your fault.// * **Admitting Fault (I was wrong):** The phrase **我错了 (Wǒ cuò le)** is the standard way to admit you were wrong. The **了 (le)** indicates a change of state—you now realize your error. * **The "Not Bad" Surprise - 不错 (búcuò):** This is one of the most important and common phrases for a beginner to learn. Literally "not wrong," **不错 (búcuò)** is a positive expression meaning "pretty good," "not bad," or "decent." It's used constantly to praise food, movies, ideas, or people's performance. Note the tone change on **不 (bù)** to **bú** before a fourth-tone character. * **Making a Mistake - 搞错了/弄错了 (gǎo cuò le / nòng cuò le):** These are extremely common, informal ways to say "I got it wrong," "I made a mistake," or "I misunderstood." **搞 (gǎo)** and **弄 (nòng)** are all-purpose verbs that mean "to do" or "to handle."