noun or participle which takes 'suru'
Mimetic for gently stroking or caressing something soft, often with a tender or affectionate nuance. Used as a suru-verb.
猫の背中をふにふにした。
I gently stroked the cat's back.
赤ちゃんのほっぺたをふにふにする。
I softly caress the baby's cheek.
noun
Describes something soft and yielding to the touch, or a dreamy, tender quality. Often used as a noun or na-adjective.
このパンはふにふにでおいしい。
This bread is soft and delicious.
ふにふにした感触が好きだ。
I like the squishy feel.