assiduity russian
усе́рдие
zeal, diligence, assiduity, painstakingness
стара́тельность
application, assiduity, diligence, painstakingness
стара́тельно
diligently, with application, with assiduity, studiously, assiduously, zealously
испра́вность
good condition, assiduity, exactness, punctiliousness
уси́дчивость
assiduity, diligence, perseverance