noun
affection among kindred spirits; bonding; fellow feeling
Refers to a sense of closeness, mutual understanding, and emotional connection between people who share similar values, ideals, or experiences. Often used in contexts of friendship, camaraderie, or solidarity.
同じ目標を持つ者同士の同志愛は強い。
The bond among those who share the same goal is strong.
彼らは苦労を共にしたことで深い同志愛で結ばれた。
Having endured hardships together, they were bound by a deep fellow feeling.
Compound of 同志 (どうし, 'comrade, kindred spirit') and 愛 (あい, 'love'). The spelling 同士愛 uses 同士 (どうし, 'fellow, mutual') with a similar meaning.