We will not reconsider cases that have already been decided.
He was imprisoned as a convicted criminal.
A convicted defendant has the right to appeal.
既決 describes a matter that has already been decided or settled, the opposite of 懸案, which is still unresolved.
既決 refers to a decision or verdict that has already been made (a legal term), whereas 解決済み means a problem or dispute has already been resolved.
convict; convicted prisoner
Compound of 既 (already) and 決 (decide). The meaning follows directly from the kanji components.