ふんとう奮闘funtou
1.

The act of putting forth one's utmost effort and determination to confront challenges or obstacles, often in a context where one may feel alone or unsupported.

2.

A vigorous and persistent struggle to overcome difficulties, emphasizing the commitment to persevere despite adversity.

3.

Engaging earnestly in a battle or contest, whether physical or metaphorical, signifying a strong willingness to fight against opposition or unfavorable circumstances.

Example:

人々は貧困に向かって奮闘した。

こぐんふんとう孤軍奮闘kogunfuntou
1.

The act of confronting challenges or difficulties single-handedly, without any support or assistance from others.

2.

A determination to engage in a struggle or battle alone, requiring significant effort and perseverance despite the lack of resources or help.

Example:

孤軍奮闘したけれど、衆寡敵せず、彼のビジネスプランは受け入れられなかったよ。

ふんとうどりょく奮闘努力funtoudoryoku
1.

The act of vigorously striving and exerting oneself towards achieving a goal, often involving significant challenges and discomfort.

2.

A determined pursuit where one dedicates maximum energy and willpower, demonstrating persistence despite obstacles.

3.

The commitment to working hard and diligently in order to overcome difficulties and realize aspirations.