self-interest

One's personal interest or advantage, especially when pursued without regard for others.

Japanese Meaning

自己利益：自分自身の利益や利得を追求すること。 / 私利私欲：自分の利益を優先し、他者の利益を考慮しない態度や行動。

She acted out of self-interest, ignoring the needs of her colleagues.

彼女は自己の利益のために行動し、同僚のニーズを無視した。

Sense（1）

One's personal interest or advantage, especially when pursued without regard for others.

I cannot abandon my husband for the sake of self-interest and personal gain.