By oneself; apart from, or exclusive of, others; solo.
Not requiring anything further; merely.
Without outside help.
Used to emphasize the size or extent of something by selecting a subset.
Not permitting anything further; exclusively.
By oneself, solitary.
Lacking peers who share one's beliefs, experiences, practices, etc.
In a single or unaccompanied manner; without a companion.
Honestly; sincerely; simply.
Individually; particularly; severally.
Without partners, companions, or associates; single-handed.