Being surrounded by enemies on all sides; isolated and without allies — used figuratively for being forsaken or besieged by opposition.
主要メンバーが次々と去り、彼はプロジェクトで四面楚歌の状態に陥った。
As key members left one after another, he found himself isolated in the project.
その政党は不祥事によって四面楚歌に追い込まれた。
That political party was driven into isolation by the scandal.
チーム内の対立でリーダーが四面楚歌にされている。
Because of internal conflicts, the leader has been left without allies.