Cách sử dụng
The word 'vacillate' means to change between two different opinions, actions or feelings, without being able to decide which one to choose. It is often used in a negative sense to describe someone who is indecisive or inconsistent. For example, if you cannot decide whether to go to a party or stay at home, you might say, "I've been vacillating all day about what to do." It is important to use the word 'vacillate' in appropriate situations where there is a need to describe this kind of waffling back and forth between options or actions.