An onomatopoeia expressing the sound or state of something being squashed or crushed; used to emphasize crushing or smashing.
踏んでしまってリンゴがぐしゃりと潰れた。
I stepped on it and the apple got squashed with a squelch.
紙を手の中でぐしゃりと丸めた。
He crumpled the paper up in his hand with a squelching sound.
胸がぐしゃりと折れたような気持ちになった。
I felt as if my heart had been crushed.