Lacking peers who share one's beliefs, experiences, practices, etc.
By oneself, solitary.
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.
Especially high-spirited, outspoken, or insistent.
Not containable or controllable.