[ noun ] a person suffering from monomania <noun.person>
Monomaniac \Mon`oma"ni*ac\, n. A person affected by monomania.
Monomaniac \Mon`oma"ni*ac\, Monomaniacal \Mon`oma"ni*a*cal\, a. [Cf. F. monomaniaque.] Affected with monomania, or partial derangement of intellect; caused by, or resulting from, monomania; as, a monomaniacal delusion.
Like most of Bernhard's narrators, he's an enraged misogynist, a cruelly self-absorbed, manipulative, self-vaunting and self-hating monomaniac (to put it gently).