the.com/defilement

Purity's least favorite word; the moment clean becomes a memory.

means The act of making something impure, dirty, or corrupted — or the resulting state of having been spoiled.

from Traces back through Middle English 'defilen' to Old French 'defouler' (to trample, violate), but tangled together with a separate native English word 'befilen' (to make foul, related to 'foul' itself). The two verbs collided in form and meaning, so the modern word carries both senses: the trampling-down of something and the plain old filth of it.

original sense
literally trampling something into filth underfoot
religious use
ritual impurity, not just physical dirt
root word
from old french defouler, to trample or abuse
legal twist
once a real criminal charge for corrupting minors
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