nihilism Noun Extreme skepticism, maintaining that nothing has a real existence.
nihilism Noun The rejection of all moral principles.
nihilism Noun ("capitalized" by protagonist Turgenev) A Russian anarchistic revolutionary doctrine (1860-1917) holding that conditions in the social organization are so bad as to make destruction desirable for its own sake, independent of any constructive program or possibility.
nihilism Noun The belief that all endeavors are ultimately futile and devoid of meaning.
nihilism Noun Contradiction (not always deliberate) between behavior and espoused principle, to such a degree that all possible espoused principle is voided.
nihilism Noun The deliberate refusal of belief, to the point that belief itself is rejected as untenable.