anything but= definitely not 根本不，决非。为idiom, 用如副词。

The hotel is anything but cheap. 这家宾馆一点都不便宜。

everything but并不是习语，but为介词表示除了。除了...外，都；唯独不...。

They lost everything but us after the equake. 地震后，他们失去了所有，但是他们还有我们。

It could do everything but stop. 除了停下来, 它什么事情都能做。

There is a remedy for everything but death. 除死亡外,一切都有补救办法。

Husband and wife were at one on everything but money. 丈夫和妻子除了在花钱方面不一致而外，其他处处一致。