assiduousness
as-sid-u-ous-ness
noun
The quality of showing great care, diligence, and persistence.
"His assiduousness in his studies earned him top marks."
Thesaurus
Synonyms: assiduity, concentration
as-sid-u-ous-ness
The quality of showing great care, diligence, and persistence.
"His assiduousness in his studies earned him top marks."
Synonyms: assiduity, concentration