The quality or state of being doltish; stupidity or the characteristic of lacking intelligence or good judgment.
Formed by adding the noun-forming suffix '-ness' to 'doltish', creating an abstract noun describing the quality of foolishness and stupidity.
English's '-ness' suffix is so productive that we can turn virtually any adjective into a noun describing that quality—'doltishness' lets us talk about stupidity as an abstract concept rather than just describing individual stupid actions.
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