thrall
noun [ U ] uk/θrɔːl/ us/θrɑːl/
in thrallliterary （被某人或某物）束缚；奴役
If you are in thrall to someone or something, or in the thrall of someone or something, he, she, or it has a lot of power to control you.
Her love for him was like a madness, and she was completely in its thrall. 她爱他如痴如狂，完全不能自拔。