1) Acappella 2) All alone 3) Glee 4) Lone 5) Lonely 6) Marooned 7) One man 8) Solo 9) Stag 10) Stranded 11) Tod 1) Alone 2) Being without an escort 3) By yourself 4) Isolated 5) Lone 6) Lonely 7) Marooned 8) Not accompanied 9) On your own 10) Single-handedly 11) Solitary 12) Solo 13) Stranded 14) Unaided 15) Unattended 16) Without help 
[adj] - without accompaniment or companions
adjective (of a state or an event) taking place without something specified occurring at the same time; `a headache unaccompanied by other symptoms`
a solo part, passage, or vocal ensemble without accompaniment.
not accompanied; alone: The shipment arrived unaccompanied by an invoice. · without an accompaniment: a sonata for unaccompanied violin.