LEARNit Dictionary
assiduous
adjective
/əˈsɪdʒuəs/
UK
/əˈsɪdʒuəs/
US
1
working very hard and taking great care that everything is done as well as it can be
سختکوش, کوشا, ساعی, پرکار, پرتلاش, زحمتکش
synonym
diligent