However, depending on the context, you might be looking for a term like:
* Deformable: This describes a material that changes shape under pressure.
* Compressible: This describes a material that can be squeezed into a smaller volume.
* Pliable: This describes a material that can be easily bent or molded.
* Brittle: While not directly meaning "squashable," brittle materials are easily broken or fractured under pressure.
Examples:
* A sponge is deformable, compressible, and pliable.
* A glass is brittle and easily squashed.
To give you a more precise answer, I need more context about what you're trying to describe. For example, are you talking about a specific object, material, or substance?