Pronunciation: [zˈɛp] (IPA) 
The spelling of the word "zep" can be confusing as it can refer to both a type of musical instrument or a shortened version of the word "zeppelin". The correct pronunciation of "zep" is [zɛp], with the "z" sound followed by the "eh" sound and ending with a soft "p" sound. The IPA phonetic transcription shows the exact pronunciation of each sound in the word, making it easier to understand and use in conversation.
The term "zep" is believed to have originated in the United States in the early 20th century. It is commonly used in some regions, particularly in Pennsylvania, Ohio, and West Virginia, to describe a submarine sandwich or a long, cylindrical sandwich on a baguette-like bread roll.
The etymology of "zep" is not entirely clear, but there are a few theories about its origins. One theory suggests that the term originated from the iconic Zeppelin airship, which captured people's imagination during the early 20th century. The airship's shape, long and cylindrical, might have been reminiscent of the submarine sandwiches, leading to the use of "zep" to describe them.
Another theory points to "hoagie" as a potential source.
