Wildcatter is a term that is commonly used to describe someone who engages in oil and gas exploration and drilling with the intention of discovering profitable new oil reserves. While there are no direct synonyms for this word, there are other expressions that can be used to convey the same idea. These include oil prospector, oil explorer, oil driller, and oil tycoon, among others. Each of these terms emphasizes different aspects of the activity, but they all refer to the same general practice of trying to find and extract oil from the ground. While the term wildcatter may be less common today, the practice of oil exploration and drilling continues to be a major industry worldwide.