Definition of "assiduousness" [assiduousness]

• Conscientious and unremitting diligence. (noun)

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• "A penchant for flames ... war-watching and assiduousness!"
• "Despite this assiduousness, he inevitably faced gaps when he started to write."
• "I can't tell you with what assiduousness I ignored this recent thing with Beck daring to screw with Martin Luther King's legacy."