詳しく (くわしく) Japanese meaning | KotomoraExpressions
詳しくはfor more details; for further information
Please explain the issue in detail.
He knows the incident in detail.
細かく
細かく stresses breaking or examining something into very small pieces or details, while 詳しく stresses giving a thorough, comprehensive explanation.
詳しく simply means 'in detail' without any judgment, while 根掘り葉掘り implies nosy, exhaustive questioning.
Etymology
Adverbial form of the adjective 詳しい (kuwashii), which is of native Japanese origin.