When searching for a synonym for the word "squashier", several alternatives come to mind. One option could be "softer", conveying the notion of a more yielding or compressible nature. Additionally, the term "flatter" may be utilized, portraying something pressed down or compacted. Another synonym that could be suitable is "mushier", which signifies a consistency that is tender or pulpy. Alternatively, the word "spongy" could be employed, suggesting a texture that is lightweight and can be easily compressed. Lastly, the term "malleable" might serve as a synonym, highlighting the ability to be shaped or molded without breaking.