ぐにゃっと

adverb, noun or participle which takes 'suru'

flabbily; limply; softly; flexibly

Describes something bending or yielding easily, often with a soft, limp, or flabby quality. Used for physical objects, textures, or movements that lack stiffness.

See also: ぐにゃり

• このパンはぐにゃっとしていて、あまりおいしくない。

  This bread is soft and limp, and not very tasty.

• 彼かれはぐにゃっと体からだを曲まげて、狭せまい隙すき間まを通とおり抜ぬけた。

  He bent his body flexibly and slipped through the narrow gap.