I was criticized without any reason.

我平白无故挨了批评。

《新英汉大辞典》

You can be happy without any reason to be happy.

你可以没有任何理由的开心。

youdao

The enemy even searched their homes without any reason.

敌人甚至毫无理由地搜查了他们的家。

youdao

They cause you to change you behavior without giving you any reason to change your behavior.

它们导致你改变了你的行为,但没有给你改变行为的理由。

耶鲁公开课 - 死亡课程节选

On the one hand, it could be that certain facts, if you knew them, would cause you to behave differently without actually giving you any reason to behave differently.

一方面，可能有某些事实，如果你知道了它们，会导致你的行为不同,但并没有真正地给你改变行为的理由。

耶鲁公开课 - 死亡课程节选

When British soldiers capture a place they start checking all the houses and arrest the civilians without any reason.

ECONOMIST: British forces in Afghanistan

It's about your life being taken from you without any reason.

NPR: Iraqi Agency Targets Police Torture

Instead of coming together like past generations did to build a better country for our children and grandchildren, their argument is that we should let insurance companies go back to denying care for folks who are sick, or let credit card companies go back to raising rates without any reason.

WHITEHOUSE: The President��s Vision for the Economy