C2 noun /ˌpærəˈnɔɪæk/
paranoiac
persona paranoica
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.
La persona paranoica se negó a salir de su casa, temiendo que todos estuvieran en su contra.