ぐにゅっと

adverb

squishily; gooily; with a squeeze

Describes the sensation or sound of something soft and yielding being squeezed, squished, or deformed, often with a slightly sticky or gooey texture.

• スライムを握にぎると、ぐにゅっとした感かん触しょくが手てに伝つたわった。

  When I squeezed the slime, a squishy sensation spread through my hand.

• 熟じゅくしたトマトを指ゆびで押おすと、ぐにゅっとへこんだ。

  When I pressed the ripe tomato with my finger, it squished in.