1. avoid making a decision or expressing your true opinion about something
Professional
Social
give your true opinion instead of sitting on the fence
The idiom 'to sit on the fence' means to avoid making a decision or taking any action. When you 'sit on the fence' you are essentially doing nothing and are not on one side or the other of a decision or disagreement. This phrase is often used to encourage someone to make a decision or to take action 'you can't just sit on the fence on this issue', you need to make a decision.