hypocritical

This term describes a specific type of moral inconsistency where a person publicly advocates for virtues they privately ignore. It carries a strong negative charge, implying a conscious deception or a fraudulent display of piety and integrity to gain social approval or moral authority.

While similar to "insincere," this word specifically targets the gap between preached standards and actual behavior. It is frequently used in political, religious, or ethical critiques to expose the contradiction between a person's stated values and their lived reality.