The quality or state of being excrementitious; the characteristic of being waste-like or disgusting.
Formed by adding -ness to excrementitious, creating a noun that denotes the abstract quality of being excrement-related or filthy.
This is one of those amazingly long words that academics in the 1700s-1800s loved creating—it's the noun form of something already pretty specific, showing how English could theoretically create endless variations of words.
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