법정대리인이 · 법정대리인을
legal representative (e.g., a minor's parent)
Example
미성년자가 계약하려면 법정대리인의 동의가 필요합니다.
A minor needs the consent of a legal representative to sign a contract.
Word parts
법 law+정 fixed+대 substitute+리 manage+인 person
Here 법정 means 'set by law', not 'courtroom'; usually a minor's parents.
Related words