委細 (いさい) Japanese meaning | KotomoraExpressions
委細承知fully understood; agreed; I understand the details 委細面談details when we meet; I'll explain in person
I reported the details of the incident to my boss.
Further details will be provided later.
Compound of 委 (entrust, detail) and 細 (fine, detailed). The exact historical derivation is uncertain, but the combination conveys 'detailed matters'.