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.
Operating, functioning, or existing without additions or assistance; independent; able to be separate or separated.
A device that can operate on its own, rather than as an accessory for another device.
Something that is not a part of some series or sequence.