expression, noun
a person who has lost their support; a monkey fallen from a tree
Idiomatic expression likening someone who has lost their position, backing, or familiar environment to a monkey that has fallen from its tree. The literal meaning is also used.
会社を辞めたら、まるで木から落ちた猿のような気分だ。
After quitting the company, I feel like a monkey fallen from a tree.
彼は権力を失って、木から落ちた猿になってしまった。
He lost his power and became a monkey fallen from a tree.