The quality or state of being a dotard; senile behavior or excessive doting.
Formed from 'dotard' with the abstract noun suffix '-y', similar to how 'knavery' comes from 'knave'. This is a variant formation related to 'dotage'.
This is essentially a synonym for 'dotage' created through a different word-formation path—English has multiple routes to similar meanings, which is why we end up with so many near-synonyms that confuse language learners.
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