ぬくぬく

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

snugly; cosily; warm and comfortable

Describes a state of being warm and comfortable, often in a cozy place like under a blanket or in a heated room. Used adverbially with と or as a する-verb.

• こたつでぬくぬくと過すごすのが好すきだ。

  I like spending time snugly in the kotatsu.

• 猫ねこがストーブの前まえでぬくぬくしている。

  The cat is lounging warmly in front of the heater.

adverb, adverb taking the 'to' particle

carefree; without hardship; living comfortably

Implies living or doing something easily, without effort or worry, sometimes with a nuance of being spoiled or taking it easy. Often used critically.

• 親おやのすねをかじってぬくぬくと暮くらしている。

  He's living carefreely off his parents.

• ぬくぬくと育そだったので苦く労ろうを知しらない。

  Having been raised without hardship, he doesn't know struggle.

noun which may take the genitive case particle 'no'

freshly made and still warm

Used attributively with の to describe food that is freshly prepared and still warm, emphasizing its appealing warmth.

• ぬくぬくのパンを朝ちょう食しょくに食たべた。

  I ate freshly baked, still-warm bread for breakfast.

adverb, adverb taking the 'to' particle

shamelessly; imprudently; brazenly

Rare usage; describes acting without shame or prudence, often in a self-satisfied manner. Can overlap with the carefree sense but emphasizes audacity.

• 彼かれは自じ分ぶんの失しっ敗ぱいを棚たなに上あげてぬくぬくと説せっ教きょうした。

  He shamelessly lectured others while ignoring his own mistakes.