虧

The glyph describes a state of deficiency or diminishment—specifically a shortfall, waning, or gradual erosion of volume, power, or integrity. Its semantic range includes:

• Cyclical/Natural: The waning of the moon or any cycle past its peak and in decline.
• Material & Financial: A budget deficit, loss of value, or a physical breach/gap (e.g., a crumbled wall).
• Moral & Social: A failure to fulfill a duty or falling short of a required standard of virtue.

• Verb: Can be intransitive (to wane, diminish, or decline) or transitive (to damage, waste, or cause a deficit).
• Adjective/State: Deficient, insufficient, or lacking; indicates that a subject is inadequate or incomplete.

• vs. 損 (sǔn): While both involve loss, 損 typically implies an active subtraction, a sudden blow, or intentional harming, whereas 虧 more frequently refers to the condition of being diminished or the gradual process of receding.
• vs. 失 (shī): 失 generally refers to misplacing a discrete object or forfeiting a right/opportunity; 虧 is used for the loss of value, volume, or status.

Simplified variant: 亏 (U+4E8F).

The glyph contains the component 頁 (head). Caution is advised against over-reading this as a specific reference to "face" or "shame" unless explicitly supported by the surrounding context.

When choosing a translation, note that 虧 often implies a gradual process of decline rather than a sudden loss.