淫

Core sense: That which exceeds its proper limit or boundary.

• Physical/Natural: Flooding, inundation, or excessive rain (water exceeding its banks).
• Temporal: To linger, prolong, or drag on beyond an expected or healthy limit.
• Behavioral/Moral: Licentious, lewd, obscene, extravagant, or indulgent; desire or behavior that has spilled over social or moral boundaries.

• Adjectival: Describes a state of excess.
• Verbal: To overflow; to indulge in (typically takes an object representing the thing in which the subject is over-immersed).

• Semantic variant: 滎 (U+5A6C) is interchangeable with 淫 in early texts, though it often refers specifically to rivers or place names.

The translator should first identify what is "overflowing" in the specific context to determine if the term is descriptive of a natural phenomenon (water/time) or a moral failing (behavior).