Litem, or an appointed guardian ad litem, is an individual who is entrusted with the responsibility of representing the interests and welfare of a minor or a vulnerable adult in a legal proceeding. There are several synonyms for litem, including guardian ad litem, court-appointed advocate, child representative, and legal protector. All of these terms essentially refer to individuals who have been appointed by a court to protect the rights and well-being of those who are unable to advocate for themselves. While litem is a term that is typically associated with legal matters, its synonyms are used interchangeably to describe professionals who are entrusted with the care and protection of others.