Board Thread:General Discussion/@comment-21064603-20131211232516/@comment-24246403-20131220143659

As far as making a weapon out of water, yes, you can. However, that usually means the use of a secondary kinesis, usually cryokinesis.

Weaponized forms of water could include compressing the water to crush or damage objects, causing all the water to leave an object to dry it out to the point of cracking and falling to dust, moving small bursts of water at quick speeds so that they slice whatever they continuously pass(if they stop, they don't cut), Or creating spikes or blades with water via cryokinesis.

Creating spikes is easier than creating blades. Water has a very fluid atomic structure. However, as the temperature of water drops, it slows and adopts a crystalline atomic structure. This is how ice crystals form. So, if you control water, then freeze it, you can pull it into a spiked point. This is easier to do on a small scale than on a large one. If you can't see the implications, I'm not pointing them out.