"squashiest" in the adjective sense
1. pulpy, squashy
like a pulp or overripe not having stiffness
2. boggy, marshy, miry, mucky, muddy, quaggy, sloppy, sloughy, soggy, squashy, swampy, waterlogged
of soil) soft and watery
"the ground was boggy under foot"
"a marshy coastline"
"miry roads"
"wet mucky lowland"
"muddy barnyard"
"quaggy terrain"
"the sloughy edge of the pond"
"swampy bayous"
3. spongy, squashy, squishy, spongelike
easily squashed resembling a sponge in having soft porous texture and compressibility
"spongy bread"
Source: WordNet® (An amazing lexical database of English)
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