By oneself, solitary.
Lacking peers who share one's beliefs, experiences, practices, etc.
Not requiring anything further; merely.
By oneself; apart from, or exclusive of, others; solo.
Without outside help.
Used to emphasize the size or extent of something by selecting a subset.
Not permitting anything further; exclusively.
Pitifully sad, wretched, miserable; lonely, especially from feeling abandoned, deserted, forsaken.
Abandoned, deserted, left behind.
Unlikely to succeed; hopeless.
A forlorn hope.
A member of a forlorn hope.