1. (noun)alone, solo, unaccompanied without anybody else or anything else
"the child stayed home alone"; "the pillar stood alone, supporting nothing"; "he flew solo"
2. (adj)unaccompanied being without an escort
3. (adj)unaccompanied playing or singing without accompaniment
"the soloist sang unaccompanied"
4. (adj)unaccompanied (of a state or an event) taking place without something specified occurring at the same time
"a headache unaccompanied by other symptoms"
5. (adverb)alone, solo, unaccompanied without anybody else or anything else
"the child stayed home alone"; "the pillar stood alone, supporting nothing"; "he flew solo"