Definition & Meaning of "holy moly"

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

The idiom "holy moly" is used to express surprise, confusion, or amazement. It is similar in meaning to "holy cow" or "holy smokes." This phrase is often used in casual conversation to add emphasis to a reaction or convey a sense of wonder. The origin of this expression is not precisely documented, but it has evolved as a lighthearted way to express such feelings without resorting to strong language.