Here are some examples:
* Off the beaten path: Means to be away from popular or well-known places, often suggesting a more adventurous or unique experience.
* Off the cuff: Implies something said or done without planning or preparation, usually spontaneously.
* Off the record: Indicates information shared confidentially, not intended for public release or attribution.
* Off the hook: Means to be free from responsibility or obligation, often after a difficult situation.
* Off the charts: Describes something exceeding the normal or expected range, typically in a positive way.
* Off one's rocker: Means to be crazy or eccentric, behaving in a way considered unusual.
* Off the wall: Indicates something unusual, strange, or unconventional.
Therefore, to understand what "off" means in an idiom, you need to consider the entire phrase and its context.