You can. If the pressure is high enough, the atoms get pushed together so hard that it becomes a solid.
This happens inside of stars and planets.
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I am aware of that, [b]however[/b] water is denser than ice, so at high pressure h2o is liquid, not solid
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It is... you're right. I guess that explains why it's boiling point is lower at lower pressures. *begins to sing* The more you know!