The editor of the Macquarie Dictionary is confused by the terminology used in Australia’s new terror rating system.

So what hope do the rest of us have!?

Ross and John asked Susan Butler what the difference was between possible, probable and expected.

At first, it appeared simple.

But a few questions from Burnso quickly changed that.

‘Oh ? I am so confused,’ Ms Butler said with a sigh on 3AW Breakfast.

Click PLAY below to hear Ross and John run through the system.