Water guns are a great way to cool down in the summer and have some fun with friends. However, if you want to switch up your vocabulary and avoid repetition, there are plenty of synonyms you can use for "water guns". For example, you could refer to them as squirt guns, water blasters, water shooters, aqua guns, H2O blasters, or even hydro blasters. If you want to get creative, you could also come up with your own name for them, such as "splash shooters" or "cool-down cannons". Regardless of what you call them, water guns are a classic summer toy that can provide hours of entertainment.