"Holy wow" is an exclamation used to express amazement, surprise, or wonder. If you want to use different words while expressing the same sentiment, try replacing it with synonyms. For example, you could say "My goodness!" or "Wowza!" to convey a similar feeling of awe. Additionally, you could use phrases like "mind-blowing" or "jaw-dropping" to describe something that really impresses you. Other options include "unbelievable," "astounding," or "incredible." Remember that the words you choose will depend on the situation and your personal style, so feel free to experiment until you find the perfect synonym for your Holy wow moment.