What is the meaning of holy moly?

The phrase "holy moly" is an exclamation used to express surprise, shock, or amazement. It is similar in meaning to other exclamations such as "oh my goodness" or "good heavens." The origin of the phrase is unclear, but it is thought to have originated in the United States in the early 20th century. It is often used in a humorous or lighthearted way, and is not considered to be offensive or profane.