1. (adverb) without anybody else or anything else

• alone
• solo

1. (adjective) being without an escort

• alone
• lone
• lonely
• solitary
• isolated
• marooned
• stranded
• tod
• unattended

2. (adjective) playing or singing without accompaniment

• a cappella
• solo

3. (adjective) (of a state or an event) taking place without something specified occurring at the same time

• separate

1. (adjective) being without an escort

• accompanied

2. (adjective) playing or singing without accompaniment

• accompanied
• attended

1. (adverb) without anybody else or anything else

• alone
• lone
• lonely
• solitary