The phrase "is on the fence" refers to someone who is undecided or neutral about a particular issue. Some synonyms for this phrase include being ambivalent, unsure, uncertain, hesitant, wavering, indecisive, sitting on the fence, or torn. An individual who is on the fence might be unwilling to take a stand on a controversial matter or may be weighing the pros and cons of a decision. This phrase is commonly used in everyday conversations, debates, and political discussions. It reflects a state of mind that requires careful consideration and contemplation before choosing a side or making a judgment call.