偏执在英语中通常被称为 "paranoia"。它来源于希腊语，"paranoein" 的意思是 "to be beside oneself"，后来被翻译为 "to be out of one's mind"，最终演变成现在的含义。

例句：

His paranoia made him believe that everyone was out to get him.

他的偏执使他相信每个人都在针对他。

She suffers from paranoid delusions and hears voices in her head.

她患有偏执妄想症，耳边不断有声音在说话。