The phrase "aw shucks" is often used to express a sense of humble appreciation. It's a versatile phrase that can be used to show modesty, gratitude, or even embarrassment. There are many synonyms for "aw shucks" that can be used to express similar sentiments. Some examples of synonyms for "aw shucks" include "gee whiz," "gosh," "darn," "shucks," "aww," and "rats." These phrases are all meant to convey a sense of humility or modesty in response to a compliment or act of kindness. So the next time you're feeling humbled or grateful, consider using one of these synonyms for "aw shucks" to express your appreciation!