for shit

vulgar

(vulgar) at all; for toffee / (vulgar) for nothing; to no purpose

Japanese Meaning

全くの (効果や目的が全く見られない) / 何のためでもなく、無意味に

He couldn't be trusted for shit after lying to everyone.

みんなに嘘をついた後、彼はまったく信用できなかった。

Sense（1）

(vulgar) at all; for toffee

A revolutionary hack Cecilia called him. They didn't trust him for shit anymore.

Sense（2）

(vulgar) for nothing; to no purpose