C1 noun /ˌpærəˈnɔɪə/
paranoia
一种不合理且持续的感觉,认为别人想要伤害你或一直在监视你
Meaning
an irrational and persistent feeling that people are 'out to get you' or are constantly watching you
Example
His constant paranoia made it hard for him to trust anyone.
他不断的偏执让他很难信任任何人。