"the half of it"의 정의 및 의미

What is the origin of the idiom "the half of it" and when to use it?

The idiom "the half of it" originated from the notion that a given situation or story has more to it than what has been revealed or explained. It is mainly used to suggest that the information or details provided are only a fraction of the whole, and there is much more that remains untold or unshared.