Good Gracious is an exclamation of surprise or shock. There are many synonyms for this phrase that convey the same meaning. These include "Oh my goodness," "Oh dear," "Oh my God," "Oh my gosh," "Holy cow," "Wow," "OMG," "Gee whiz," "Goodness me," and "Heavens above!" All of these phrases express surprise or shock and are perfectly acceptable substitutes for each other. Depending on the context and the tone of the conversation, one phrase may be more appropriate than another. Regardless of the synonym used, it is always important to maintain a respectful tone and remain polite in any situation.