nugu
1.

To remove clothing or accessories that one is wearing, often implying the act of changing from a dressed state to a less clothed or completely nude state.

2.

To disrobe or shed various garments, which can include a range of items from outerwear to footwear, signifying a transition to a different level of clothing or exposure.

3.

To become unclothed, indicating a physical action of taking off items that cover the body, which can also metaphorically represent shedding layers or defenses.

Example:

ここで靴を脱がなければなりませんか。

ひとはだぬ一肌脱hitohadanugu
1.

To step in and offer one’s assistance or support when someone is in need, often going beyond one’s usual responsibilities.

2.

To take an active role in helping someone, especially in a time of difficulty, demonstrating a personal commitment to their cause.

3.

To lend a hand by getting personally involved, contributing effort or resources to aid someone as a gesture of solidarity.

Example:

馬鹿を承知で一肌脱ぎましょう。