C2 noun /ˌpærəˈnɔɪæk/
paranoiac
偏执的人
Meaning
A person who suffers from paranoia or exhibits extreme, irrational distrust and suspicion.
Example
The paranoiac refused to leave his house, fearing everyone was against him.
这个偏执的人拒绝离开家,因为他害怕每个人都反对他。