C2 noun /ˌpærəˈnɔɪæk/
paranoiac
paranoide person
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.
Die paranoide Person weigerte sich, das Haus zu verlassen, weil sie fürchtete, dass alle gegen sie waren.