ふかふか

noun which may take the genitive case particle 'no', na-adjective, adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'

soft and fluffy; plump; springy

Describes something pleasantly soft, fluffy, and resilient, like a fresh bed, bread, or a thick carpet. Often used with する or as an adverb.

• このパンはふかふかでとてもおいしい。

  This bread is soft and fluffy and very delicious.

• 新あたらしい布ふ団とんはふかふかしている。

  The new futon is soft and springy.

adverb taking the 'to' particle, noun or participle which takes 'suru'

absent-mindedly; in a daze

Archaic mimetic use for being spaced out or not paying attention. Rare in modern Japanese; the soft/fluffy sense is overwhelmingly more common.

• 古こ文ぶんでは「ふかふかと」がぼんやりした様よう子すを表あらわすことがある。

  In classical texts, ふかふかと can describe an absent-minded state.