Like wow is an exclamation often used to express amazement or surprise. There are several synonyms that can be used in its place to convey the same feeling. One option is "amazing," which can be used to describe something that is impressive or awe-inspiring. Another option is "astonishing," which suggests that something is hard to believe. "Incredible" is another synonym that can be used to describe something that is unbelievably impressive or noteworthy. "Wowzers," "holy cow," or "gee whiz" are also fun and whimsical alternatives to "like wow." These synonyms can add variety and expressiveness to your language when you want to convey excitement and surprise.