"Heavens above" is a commonly used phrase to express surprise, shock, or disbelief. However, there are several other synonyms that can be used interchangeably with this phrase. Some of the most popular synonyms for "heavens above" include "Goodness gracious," "Oh my goodness," "Holy cow," "Wowza," "Gosh," "My word," "My goodness," "Oh my gosh," and "Golly." All of these synonyms have the same connotation as "heavens above" and are used to express surprise or shock. So, next time when you want to express amazement or surprise, you can use any of these synonyms interchangeably with "heavens above".