When you hear the word "yikes", it is often an expression of surprise, shock or alarm. However, if you are looking for some different ways to convey the same message, there are many synonyms that you may use. For example, words like "oops", "whoops", "oh no", "uh-oh", "wow", "my goodness" can all express the same sentiment. Similarly, some other alternative phrases that you might use could be "Gosh!", "Holy cow!", or "Good grief!". So, if you want to spice up your vocabulary or just need an alternative expression to yikes, there are numerous synonyms available that you can use.