The characteristic behavior or condition of a dotard; the tendency toward dotish or senile behavior.
Formed from 'dotard' with the philosophical/ideological suffix '-ism', creating an abstract noun for the state or system of being a dotard (rare formation).
This word is so rare that it barely exists in modern usage, yet it perfectly illustrates how English can theoretically create words for almost any concept by combining roots—most such combinations simply don't catch on.
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