mendacity

This term carries a heavy moral judgment, suggesting a systemic or habitual commitment to dishonesty rather than a single, isolated lie. It is typically employed in formal, legal, or political contexts to describe a character flaw or a pervasive culture of deception. As an uncountable noun when referring to the general quality of untruthfulness, it describes a state of being. However, it can function as a countable noun when referring to specific acts of lying, though this usage is less common in contemporary speech.