What is another word for howdy do?
Pronunciation: [hˈa͡ʊdi dˈuː] (IPA) 
Howdy do is a colloquial greeting commonly used in the southern regions of the United States. Despite its friendly connotation, it may not be appropriate for formal or professional settings. However, there are many other synonyms for howdy do that you can use instead. Some of these include "hello," "hi there," "hey," "greetings," "welcome," or "salutations." Each of these greetings has its own unique tone and can create a different impression. Therefore, it's important to choose the right one for the context you're in. Ultimately, the goal is to convey warmth and friendliness as you make your initial introduction.
