Un-accompanied means traveling alone or without company. Antonyms are words that have opposite meanings. One antonym for un-accompanied is accompanied, which means to travel with someone or in a group. Other antonyms include accompanied by someone or something, escorted, and chaperoned. These words imply that the person is not alone and is being watched over or guided in some way. Other antonyms for un-accompanied include accompanied by music, accompanied by a pet, accompanied by a guide, or accompanied by a parent or guardian, all of which add to the experience of traveling with someone or something else.