depleted

This term conveys a sense of emptiness or exhaustion that goes beyond simple reduction. It suggests a state of being nearly spent or critically low, often implying that the remaining amount is insufficient to maintain normal function or stability. When applied to resources, it carries a tone of urgency or loss.

In a human context, the word describes a profound state of fatigue where both physical and mental reserves are gone. It is more intense than "tired" or "exhausted," suggesting a total drain of vitality. In scientific contexts, particularly regarding uranium, it is a technical descriptor for a specific isotopic state rather than a measure of quantity.