Cách sử dụng
The word 'covert' means something that is done secretly or in a hidden way. For example, spies can conduct covert operations to gather information without being noticed. The word is often used in situations where someone needs to do something without drawing attention to themselves. In everyday life, you might use the word 'covert' to describe someone who is trying to be sneaky or secretive. It's important to use the word 'covert' carefully, as it can have negative connotations in some situations.