studious russian
приле́жно
diligently, industriously, assiduously, studiously
приле́жный
diligent, industrious, assiduous, studious
стара́тельно
diligently, with application, with assiduity, studiously, assiduously, zealously
прилежа́ние
diligence, industry, assiduousness, assiduity, application, studiousness