A grudge or grievance, with implications of confrontation.
A proposition or point of view to advocate, especially motivated by self-interest.
The state of being deluded or misled, or process of deluding somebody.
A false belief that is resistant to confrontation with actual facts.
A fixed, false belief, that will not change, despite evidence to the contrary.
That which is falsely or delusively believed or propagated; false belief; error in belief.