What is the meaning of unaccompanied?

adjective

• Being without an escort.
• Playing or singing without accompaniment.
  • usage: "the soloist sang unaccompanied"
• Of a state or an event. ( taking place without something specified occurring at the same time)
  • usage: "a headache unaccompanied by other symptoms"

adverb

• Without anybody else or anything else.
  • usage: "the child stayed home alone"; "the pillar stood alone, supporting nothing"; "he flew solo"
  • synonyms: alone, solo