纠结（jiū jié）是指精神上的烦恼、焦虑、担忧，或对某件事情的难以下决心的状态。纠结在汉语中有多重含义，包括挣扎、纠缠、纠纷等。

在英语中，常用的表达有：

Be tormented by (something)

Be troubled by (something)

Be worried about (something)

Be in a quandary about (something)

Be indecisive about (something)

例句：

I'm tormented by the thought of what might happen if I don't get this job.

She was troubled by the guilt of having lied to her best friend.

He was worried about the health of his father, who had been in the hospital for weeks.

I'm in a quandary about whether I should accept this job offer or not.

She was indecisive about what to wear to the party.

纠结这个词的来源可能源自汉语，也可能源自中文的借词。无论如何，它在英语中的使用普遍存在。