Used to describe being undecided between two options, unable to choose one over the other.
“I'm on the fence about switching gyms - the new one is closer but more expensive.”
“I'm on the fence about the blue paint or the gray one for the living room.”
This idiom often appears in Listening Part 1 when a speaker hasn't yet decided between two solutions being discussed. Recognizing it tells you that a final decision hasn't been reached yet, so listen for what comes next, as the other speaker will often help tip the balance. This is useful for questions asking whether a speaker has made up their mind.
Synonyms: I'm undecided, I'm torn, I can't decide