Alone
Part of speech: adjective
Definition: By one's self; apart from, or exclusive of, others; single; solo; solitary;—applied to a person or thing.
Part of speech: adverb
Definition: By one's self; apart from, or exclusive of, others; solo Without outside help; singlehandedly
Example sentence: All men's miseries derive from not being able to sit in a quiet room alone.
Unaccompanied
Part of speech: adjective
Definition: travelling without companionsperformed or scored without accompaniment; solo