The word "偏执狂" is formed by sequentially combining three characters: 偏, meaning "biased" or "partial"; 执, meaning "persistent" or "holding onto"; and 狂, meaning "madness" or "mania". The pair 偏执 creates a concept of obsessive stubbornness or paranoia, and adding 狂 specifies a pathological intensity, resulting in a term that denotes paranoia or a paranoid mental disorder.